Tom and Jerry can paint a house together in 9 days. If Tom alone can paint the same house in 15 days, how long will it take for Jerry to paint the house alone?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 45/2 days.
Tom and Jerry can paint a house together in 9 days and Tom alone can paint the same house in 15 days
L.C.M(9, and 15) = 45
The efficiency of Tom and Jerry = 45/9 = 5 units
The efficiency of Tom = 45/15 = 3 units
So, the efficiency of Jerry = 5 - 3 = 2 units
Now,
Time taken by Jerry = 45/2 days