RRB JE Maths Important Solved MCQs


Twenty women can do a work in sixteen days. Sixteen men can complete the same​​ 

work in fifteen days. What is the ratio between the capacity of a man and a woman?

A.

3 : 4

B.

4 : 3

C.

5 : 3

D.

Data inadequate

Answer: Option B

 

(20 x 16) women can complete the work in 1 day.

https://www.indiabix.com/_files/images/aptitude/1-sym-tfr.gif 1 woman's 1 day's work =

1

.

320

(16 x 15) men can complete the work in 1 day.

https://www.indiabix.com/_files/images/aptitude/1-sym-tfr.gif 1 man's 1 day's work =

1

240

 

So, required ratio

=

1

:

1

240

320

 

=

1

:

1

3

4

 

= 4 : 3 (cross multiplied)