Question

Rahul can do a piece of work in 10 days and simran can do it in 15 days. How long will they take to complete it if they work together?
a. 6 days
b. 5 days
c. 4 days
d. 3 days​

Answer 1

Step-by-step explanation:

R 1 day work =1/10

S 1 day work = 1/15

R+S = 1/10 + 1/15= 3+2/30=1/6

together they finish the work in 6 days

Answer 2

QUESTION :-

Rahul can do a piece of work in 10 days and simran can do it in 15 days. How long will they take to complete it if they work together?

Time taken by Rahul to finish the work =10 days.

Work done by Rahul in 1 day = 1/10

Time taken by Simran to finish the work = 15days.

Work done by Simran in 1 day = 1/15 days.

Work Done by Rahul and Simran in 1 day = 1/10 + 1/15

= 3+2/30 = 1/6

So, Thus Taken by both to finish work = 1 ÷ 1/6 = 6 days.

So A option is Correct.