SOLUTION: if one guy can paint a house in 5 hours, and another guy can do it in 3, how long will it take them together if the 5 hour guy starts an hour earlier then the 3 hour guy?
Algebra ->
Rate-of-work-word-problems
-> SOLUTION: if one guy can paint a house in 5 hours, and another guy can do it in 3, how long will it take them together if the 5 hour guy starts an hour earlier then the 3 hour guy?
Log On
Question 402220: if one guy can paint a house in 5 hours, and another guy can do it in 3, how long will it take them together if the 5 hour guy starts an hour earlier then the 3 hour guy?
You can put this solution on YOUR website! Thanks for correcting me!
if one guy can paint a house in 5 hours, and another guy can do it in 3, how long will it take them together if the 5 hour guy starts an hour earlier then the 3 hour guy?
.
Let x = time (hours) it takes for both
then
(x+1)(1/5) + x(1/3) = 1
multiplying both sides by 15:
(x+1)(3) + x(5) = 15
3x+3 + 5x = 15
8x+3 = 15
8x = 12
x = 1.5 hours