RRB JE Maths Important Solved MCQs

4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can

​​ complete it in 10 days. In how many days will 10 women complete it?

A.

35

B.

40

C.

45

D.

50

Answer: Option B

 

Let 1 man's 1 day's work = x and 1 woman's 1 day's work = y.

Then, 4x + 6y =

1

and 3x + 7y =

1

.

8

10

 

Solving the two equations, we get: x =

11

y =

1

400

400

 

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

1

.

400

 

https://www.indiabix.com/_files/images/aptitude/1-sym-imp.gif 10 women's 1 day's work =

https://www.indiabix.com/_files/images/aptitude/1-sym-oparen-h1.gif

1

x 10

https://www.indiabix.com/_files/images/aptitude/1-sym-cparen-h1.gif

=

1

.

400

40

Hence, 10 women will complete the work in 40 days.