The bar chart shows the number of handphones sold by a shop in 5 days of a certain week. The difference between the highest number and the lowest numberof handphones sold is 15. Find the number of handphones sold on Thursday.
A
6
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B
12
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C
18
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D
24
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Solution
The correct option is C18 Highest number of phones were sold on Friday and lowest number were sold on Wednesday. The difference in their heights is 5 unit squares which is found by counting the difference in the height of their bars. But the given difference is 15 =>5units=15 1unit=3phones On counting, the bar drawn for Tuesday occupies 6 units. So, number of phones sold on Tuesday =6×3=18