SOLUTION: Jiga can finish painting his house in 24 minutes. If his brother will help him they will finish it. in 15 minutes. How long will it take his brother to paint it alone?

Question 831090: Jiga can finish painting his house in 24 minutes. If his brother will help him they will finish it. in 15 minutes. How long will it take his brother to paint it alone?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = brother's time in minutes to paint it alone
Add their rates of painting to get their
rate working together
( 1 house ) / ( 24 min ) + ( 1 house ) / ( t min ) = ( 1 house ) / ( 15 min )

Multiply both sides by

It will take his brother 40 min working alone

RELATED QUESTIONS
Timothy can mow his lawn in 40 minutes, but his brother Shamus needs only 30 minutes to... (answered by nerdybill)

Doug can deliver his pspers in 45 minutes. If Meg helps, they can finish in 20 minutes.... (answered by fractalier)

mark can mow a lawn in 20 minutes less time than his sister Marie. Together they can mown (answered by ewatrrr)

Mark can mow a lawn in 20 minutes less time than his sister Marie. Together they can mow... (answered by josmiceli,richwmiller)

Jonathan can paint a room in 8 hrs. After painting for 2 hours, his brother, David joined (answered by fractalier)

John can paint the fence around his house in 15 hours, while his brother chad can do it... (answered by ankor@dixie-net.com)

My brother and I have to whitewash both sides of a fence. We start at the same time, and... (answered by Aldorozos,MathTherapy)

John can paint a fence in 15 hours. his brother can paint it in 18 hours. If john paints (answered by tommyt3rd,Cromlix)

Gently can clean the house in 1 Hour and 40 minutes while marivic can clean the house in... (answered by josgarithmetic)