Question

Fred can paint a house in 10 hours. Together, Pat and Fred can paint the house in 8 hours. Which equation, when solved, will produce the number of hours needed for Pat to paint the house alone? Choose one answer.
a. 10/8+9/8=1
b. 8/10+8/p=1
c. 8/10+9/8=1
d. 10/8+8/p=1 Please show work too! and is it B? Not quite sure

Answer 1

you're right !

Answer 2

F paints the house in 10 hours
=> F paints 1/10 th of the house in 1 hour

both P + F paints in 8 hours
=> P + F paint 1/8 th of the house in 1 hour

=>
1/10 + 1/P = 1/8
=>
8/10 + 8/P = 1

Answer 3

ok, thanks :)

Answer 4

np :)