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Find the ratio of the total number of ball point pens sold by shop A to the total number of fountain pens sold by shops A and B together.
5 тИ╢ 3
9 тИ╢ 8
1 тИ╢ 4
2 тИ╢ 7
None of the above
1 тИ╢ 4
Read the points directly from the line graph at the specified intervals for shops A and B, then simplify the resulting fraction.
Ball point pens sold by Shop A = 200, Fountain pens sold by Shop A = 400, Fountain pens sold by Shop B = 400.
Ratio=Fountain┬аpensAтАЛ+Fountain┬аpensBтАЛBall┬аpoint┬аpensAтАЛтАЛ
Read the points directly from the line graph at the specified intervals for shops A and B, then simplify the resulting fraction.
Confusing the symbols: the question asks for ball point pens (circle) for A, and fountain pens (triangle) for A and B.
Identify data from the graph
From the line graph, the value for Ball point pens (тЧЖ) sold by Shop A is 200. The values for Fountain pens (тЦ▓) sold by Shop A is 400 and by Shop B is 400.
Ball┬аpoint┬аpensAтАЛ=200,Fountain┬аpensAтАЛ=400,Fountain┬аpensBтАЛ=400
Calculate the totals
The total number of fountain pens sold by shops A and B together is the sum of their individual sales.
Total┬аFountain┬аpens=400+400=800
Find the ratio
Calculate the ratio of the ball point pens sold by shop A to the total fountain pens sold by shops A and B.
Ratio=800200тАЛ=41тАЛ=1:4
C is correct because the ratio of 200 ball point pens at A to 800 total fountain pens at A and B simplifies to 1:4.
Data Interpretation questions often require carefully reading the legend; always map the marker shapes to the corresponding legend key before calculation.
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