Time and Work - Problem 2

 

2.A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:? A. 9 1 days 5 B. 9 2 days 5 C. 9 3 days 5 D. 10 A can do work in 16 days A's 1 day work is 1/16 B can do work in 12 days B's 1 day work in 1/12

A,B,C can do work in 4 days

1/4-(1/16+1/12) = 5/48

5/48*c=1

c=48/5

c=9(3/5)

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())

print("a,b,c complete work in 4 days")

c=1/a+1/b

d=(1/4)-c

e=1/d

print("C alone can do it in")

print(e)

.

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)