Question

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

• A. $3:1$
• B. $1:3$
• C. $4:1$
• D. $1:4$

Answer 1

The correct option is A

$3:1$

Total number of pages typist has to type = 40 pages

Number of pages typed by the typist = 30 pages

Number of pages left to be typed = 40 - 30 = 10 pages

$Ratio=\frac{Numberofpagestyped}{Numberofpagesleft}$

$=\frac{30}{10}=\frac{3}{1}or3:1$

Thus, the ratio of typed pages to the remaining pages is 3:1