Question

Sam read 10 pages of a novel in 40 minutes. If he read for 2 hr and 40 min, how many pages of novel will he read? Given the speed of reading is same.

• A. 39
• B. 40
• C. 41
• D. 42

Answer 1

The correct option is B 40

We know,
$1\text{hour}=60\text{minutes}$
So,
$2\text{hour}=120\text{minutes}$
$2\text{hour}40\text{minutes}=120\text{minutes}+40\text{minutes}=160\text{minutes}$
According to question,
$\text{Number of pages}\propto \text{time taken}$
Given, Sam reads 10 pages in 40 min

$\therefore \frac{\text{Number of pages}}{\text{time taken}}=\frac{10}{40}=\frac{1}{4}=k$

Let the number of pages read in 160 minutes be x.

As speed remains the same,
$\therefore \frac{\text{Number of pages}}{\text{time}}=k$
$\frac{x}{160}=\frac{1}{4}$$(\because k=\frac{1}{4})$
$\to x=\frac{160}{4}=40$
Hence, Sam can read 40 pages in 160 min.