SOLUTION: Kareem and Abdul are working together on a neighborhood cleanup. Kareem can clean up all the trash in the area in 7 hours while Abdul can do the same job in 9 hours. How long will

Question 1075752: Kareem and Abdul are working together on a neighborhood cleanup. Kareem can clean up all the trash in the area in 7 hours while Abdul can do the same job in 9 hours. How long will it take them working together? and convert your answer in hour, minutes, and seconds form.
I have figured out that
36(1/9x+1/7x)=
9x+7x=36 =
16x/16=63/16 =
x=3 15/16
I am having trouble figuring out how to covert my answer to hours, minutes, and seconds.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
a few ways to convert
3600 seconds in an hour*15/16=3375 sec.
divide by 60 to get 56.25 minutes
.25 minutes is a quarter of a minute or 15 seconds
3h56m15s
----------------------------
Also (15/16)*60 minutes and go right to 56.25 minutes and solve from there.
RELATED QUESTIONS
One highway worker can pick up all the trash on a strip of highway in 5 hours, and his... (answered by stanbon)

Word problem. Ships. After a small oil spill, two cleanup ships are sent to siphon off... (answered by stanbon)

Working alone, Taylor can clean a building in 5.5 hours. Ed can clean the same building... (answered by richwmiller)

When 6 students show up for the Swift River Cleanup Day, they can pick up all of the... (answered by ankor@dixie-net.com)

One worker can pick up trash on the highway in seven hours the other worker can pick up... (answered by josgarithmetic)

Working together, Chip and Dale can clean a stadium in 72 minutes. Chip working alone... (answered by josmiceli)

Kareem drove to the mountains last weekend. There was heavy traffic on the way there, and (answered by Alan3354)

A neighborhood trash pick up every 7 days and the recycling comes every 12 days. After... (answered by stanbon)

Amanda, Kareem, and Sam sent a total of 130 text messages during the weekend. Amanda sent (answered by jorel555)