Question

Question 75

A typist has to type a manuscript of 40 pages. She has typed 30 pages of the manuscript. What is the ratio of the number of pages typed to the number of pages left?

Answer 1

Total number of pages of manuscript to be typed = 40
Number of pages typed = 30
Number of pages left to be typed = (Total pages - Pages typed)

= 40 - 30 = 10
The ratio of the number of pages typed to the number of pages left

= $\frac{\text{Number of pages typed}}{\text{Number of pages left}}$
$=\frac{30}{10}=\frac{3}{1}=3:1$ [on dividing numerator and denominator by 3]

Hence, the ratio of the number of pages typed to the number of pages left is 3 : 1.