Question

Joe and Theresa want to paint their living room. From past experience they know that Joe can paint the room in 6 hours and Theresa can paint it in 10 hours. How long will it take them if they work together?

Mower A can cut a field in 6 hours and Mower B cut the same field in 2 hours. How long would it take both mowers working together to cut the field.

A certain amount of money is invested for one year at 8% simple intrest. The total principal and intrest at the end of the year is $1620. Find the original amount invested.


I have trouble with setting up word problem equations. If you could just help me set up the equation im sure I could solve and get the right answer.

Answer 1

Joe does 1/6 room/hour
Theresa does 1/10 room per hour

together they do (1/6+1/10) = 5/30 + 3/30 = 8/30 = 4/15 of a room /hour

so 15/4 hours/room (about 4 hours)

Answer 2

same deal with the mowers
1/6 + 1/2 = 1/t
2/3 = 1/t
t = 1.5

Answer 3

1.08 x = 1620

Answer 4

Thank you so much I really appreciate you helping me set up these problems, again thank you!

Answer 5

You are welcome :)