Time and Work - Problem 1

 1. A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is?

A.	1 4
B.	1 10
C.	7 15
D.	8 15

A work in 15 days A 1 day work is 1/15

B work in 20 days B 1 day work is 1/20

Both will work together in 1/15+1/20 = 7/60

They worked in 4 days 7/60*4 = 7/15 of work will completed in 4 days.

Work remaining is 1-7/15 = 8/15.

Python Code:

print("A can do work in How many days")

a=int(input())

print("B can do work in How many days")

b=int(input())

c=1/a

d=1/b

e=c+d

f=4*e;

g=1-f

print("Solution for the answer is")

print(g)