Short answer: Treat a mixed-chart task as one report, not two. Write one introduction covering both visuals, one combined overview naming the main feature of each, then give each chart its own body paragraph — connecting the two data sets with a cautious linking sentence where the relationship is visible.
Sometimes Task 1 gives you two visuals at once: a bar chart with a line graph, a pie chart with a table. Candidates fear these tasks, but the word count has not changed — 150 words now describe two pictures, which means less detail per chart, not more work.
This is the mixed-charts deep dive under our general graphs and charts pillar. The single-visual skills still apply; what this post adds is the combining.
How do you answer an IELTS Task 1 question with two charts?
The instruction is the same as always: summarise the main features and make comparisons where relevant. With two visuals, "where relevant" now includes the relationship between them — the examiner chose these two charts because they sit together.
So read both before writing either. Ask what each chart shows on its own, and then the key question: do they share an axis? Two charts covering the same years, the same countries or the same categories are inviting you to connect them.
A production chart paired with a price line, for example, is showing you supply and price over the same decade. You are not asked to explain the economics — your only job is to observe, accurately, that one measure rose while the other one fell.
What is the best structure for a two-chart answer?
Keep the four-paragraph shape and split the bodies by visual. It is the cleanest organisation and the easiest to execute under time pressure.
| Paragraph | Job | Notes |
|---|---|---|
| 1 — Introduction | Paraphrase both visuals in one or two sentences | "The bar chart shows X, while the line graph gives Y" |
| 2 — Overview | The main feature of each chart, plus the relationship if clear | Must cover both visuals — no figures |
| 3 — Body 1 | Chart 1 in selected detail | 3–4 sentences, key figures only |
| 4 — Body 2 | Chart 2 in selected detail, linked back to chart 1 | End with one connecting observation |
The non-negotiable is the combined overview. An overview that summarises only the first chart leaves the second visual without its main features identified — an information gap that holds Task Achievement down however good the rest is.
Watch the tenses too, because each visual sets its own frame. Two charts covering the same past decade share the past simple, but a past table paired with a projected chart forces a switch — past simple for one body, "is expected to" for the other. Decide both frames before writing.
Selection has to be even harsher than usual. With 75-ish words per chart, each body carries perhaps three or four figures. The triage skill from our table guide — headline, support, noise — applies doubly here.
How do you connect two different charts in one report?
With observation language, never causal claims. The charts show two things happening over the same period; they do not prove one caused the other, and Task 1 does not ask you to argue it.
| Safe (describes) | Risky (explains) |
|---|---|
| Prices fell as production expanded. | Prices fell because production expanded. |
| The decline mirrored the growth in output. | The growth in output drove prices down. |
| The two trends moved in opposite directions. | Oversupply caused the price collapse. |
| The recovery coincided with the final year of the period. | The market corrected itself in 2020. |
"As", "while", "mirrored", "coincided with" — these link the data sets while staying inside what the charts actually show. One such sentence, usually at the end of Body 2 or inside the overview, is enough to demonstrate you read the task as a whole.
Band 7 mixed charts model answer (annotated)
The task below was written for this article as a teaching example in the exam's style — not a real or predicted question.
"The bar chart shows coffee production, in millions of bags, in Brazil and Vietnam between 2010 and 2020. The line graph shows the average world coffee price per kilogram over the same period."
Model answer (177 words):
The two charts give information about the coffee market between 2010 and 2020: the bar chart shows annual production in Brazil and Vietnam in millions of bags, while the line graph tracks the average world price per kilogram.
Overall, output rose in both countries across the decade, whereas the world price moved in the opposite direction, falling for most of the period as supply expanded.
Brazil produced 48 million bags in 2010, and this figure climbed fairly steadily to 63 million by 2020. Vietnam's production, although far lower in absolute terms, grew at a similar rate, rising from 19 million to 29 million bags over the same years.
The price line broadly mirrored this growth in supply. Having peaked at $5.20 per kilogram in 2011, the average price fell almost continuously, bottoming out at $2.80 in 2019 — close to half its peak — before recovering slightly to $3.10 in the final year, even as production reached its highest level.
Why it works. One introduction handles both visuals in a single sentence with a clear "while" pivot. No time is wasted introducing them separately.
The overview covers both charts and states the relationship — "moved in the opposite direction... as supply expanded" — using "as" for observation, not "because" for explanation.
Each chart gets one disciplined body paragraph: two headline figures per country for the bar chart; peak, trough and recovery for the line. The final clause ("even as production reached its highest level") ties the visuals together one last time without claiming causation.
What mistakes lose marks on mixed chart questions?
The structural failure is writing two separate mini-reports — two introductions, two overviews, no connection. It signals that the task was read as two questions, and it burns words the details need.
The opposite failure is over-connecting: building a causal argument the charts cannot support. One observational link is analysis; a paragraph of economics is off-task speculation.
Time imbalance is the quiet killer. Candidates spend thirteen minutes polishing chart one and scramble chart two into two sentences. Decide your figure budget per chart before writing, and split the twenty minutes down the middle.
And the standard rules hold: combined overview or a Band 5 ceiling, correct tenses per chart, no invented precision. The ranked list is in our common Task 1 mistakes guide.
How do you practise mixed chart answers?
Practise the planning step alone: given any two visuals, write just the introduction and the combined overview in five minutes. That is the part unique to mixed tasks — the body paragraphs are ordinary single-chart writing you have already trained elsewhere.
For full answers, use the IELTS Writing Checker to verify the things you cannot easily judge yourself: whether the overview genuinely covers both visuals, whether the link reads as observation or speculation, and where your word budget actually went.
Measured checks like these, repeated weekly, are what our writing improvement guide builds the whole routine around.