SOLUTION: Jean filled the pool in 8 hours, and Mark filled it in 12 hours. The supervisor says it will take them 10 hours to fill it together. Is the supervisor correct or not, and why. (I f

Question 1021282: Jean filled the pool in 8 hours, and Mark filled it in 12 hours. The supervisor says it will take them 10 hours to fill it together. Is the supervisor correct or not, and why. (I found a GCF of 24 but I'm not sure if that's correct)
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
"Filling THE pool" is the job to be done.

RATES:
Jean
Mark
in units of POOL per HOURS

Combined fill rate for Jean and Mark working on the task together is , POOLS per HOUR.

That is 24 HOURS to fill 5 POOLS;

HOURS per POOL.
RELATED QUESTIONS
A swimming pool can be filled in 12 hours, and requires 18 hours to drain. If the drain... (answered by Fombitz)

A swimming pool can be filled in 12 hours and drained in 20 hours. If the pool is empty... (answered by stanbon)

One pipe can fill a pool in 8 hours. The drain can empty it in 14 hours. With the pipe on (answered by drk,ankor@dixie-net.com)

One pipe can fill a pool in 8 hours. The drain can empty it in 14 hours. With the pipe... (answered by edjones)

a pool is filled by one pipe in 10 hours. The same pool is filled by another pipe in 6... (answered by richwmiller)

a pool can be filled water using pipe a in 4hrs drained using pipe b in 10 hours. if... (answered by mananth)

With one hose a swimming pool can be filled in 12 hours. Another hose can fill it in 16... (answered by Cromlix)

A pool can be filled in 12 hours using a pipe alone, or in 28 hours using a hose alone.... (answered by checkley77,nerdybill)

A pool can be filled in 96 hours and drained in 144 hours. How many hours will it take to (answered by ikleyn,greenestamps)