exam Maths Puzzle Numerical Ability

write as a percent 5/8 then 7/16 and 5/4

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exam Other Question

I am really having difficulty understanding this section of my algebra class.

Solve:

SQRT(3X+5)= SQRT(5X-7)

Can anyone show me the steps the solve this? A garden hose can fill a swimming pool in 3 days, a larger hose can fill the pool in 2 days, how long will it take if both hoses are used?