SOLUTION: A rectangular swimming pool has a length of 10 feet and a width of 8 feet. The water in the pool has a depth of 6 feet. If you add 40 cubic feet of water to the pool, how much will

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Question 159458: A rectangular swimming pool has a length of 10 feet and a width of 8 feet. The water in the pool has a depth of 6 feet. If you add 40 cubic feet of water to the pool, how much will the depth of the water increase?
I don't understand what formula to use, or how to figure it out.

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A rectangular swimming pool has a length of 10 feet and a width of 8 feet. The water in the pool has a depth of 6 feet. If you add 40 cubic feet of water to the pool, how much will the depth of the water increase?
:
Let x = no. of feet increase in water
:
Find the volume of the water originally
10*8*6 = 480 cu ft
:
When you add 40 cu ft;
10*8*(x+6) = 480 + 40
:
80(x+6) = 520
:
80x + 480 = 520
:
80x = 520 - 480
:
80x = 40
x = 40%2F80
x = 1%2F2 ft increase in the depth
:
Check 10*8*6.5 = 520
:
:
Do you understand it now?