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Question

If a student requires 8 pages to write 4 essays, then how many pages will be required to write 10 essays?
 
  1. 8 pages
  2. 20 pages
  3. 12 pages
  4. 18 pages


Solution

The correct option is B 20 pages
Given, a student requires 8 pages to write 4 essays.

We know that if the number of essays increase, the number of pages utilised will also increase.

So,
Number of pages(x)Number of essays(y)
x1y1 = x2y2

Given,
x1 = 4 essays
y1 = 8 pages
x2 = 10 essays
and, y2 = number of pages required

48 = 10y2
y2 = 10×84
y2 = 20
So, the number of pages required to write 10 essays = 20

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