Question

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. $6$
• B. $12$
• C. $18$
• D. $24$

Answer 1

The correct option is C $18$

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 $=6\times 3=18$