Question

Madan can do 2/5 of a work in 9 days. He calls Amar to finish the remaining work. They wor
together and finish in 6 days. How many day will be taken by Amar to finis the whole wor
alone?
a. 36
b. 18
c. 9
d. 12​

Answer 1

Answer:

Madan can complete the work in 18 days

Answer 2

answer=

remaining work = 1-2/5= 3/5

madan and Amar finish work together 3/5 in 6 days

time taken by madan and Amar for doing wholework = 6*5/3 = 10 days

time taken by does 2/5 in 9 days = 5*9/2= 45/2

Amar to finish the whole work is = 1/10- 2/45

9-4/90 = 5/90 = 18 days.