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March 29, 2015

March 29, 2015

Posted by **justme** on Thursday, October 22, 2009 at 1:42pm.

Your next project will involve painting the walls and ceiling of your room. First find the surface area of each wall and the ceiling in square feet. NOTE: you need to CLEARLY identify which of your dimensions is the HEIGHT. Then add them together to find the surface area to be painted (#4). Assuming 1 gallon covers 350 square feet, find the amount of paint in gallons that you need to paint the walls and ceiling (#5). Then convert the number of gallons to liters (round to an accuracy of 0.1 liters) (#6).

You've decided you like the paint that is 3% color pigment. However, you've bought 7% paint on sale and can't take it back. How much 7% paint (#7) needs to be diluted with pure white paint (#8) to equal the amount of 3% paint (#5) you need?

The answer to #4 is 419 sqft.

The answer to #5 is 1.2 gallons.

The answer to #6 is 4.6 liters.

I can't figure out the formula needed to solve the rest of the problems.

- math -
**bobpursley**, Thursday, October 22, 2009 at 2:08pm.07(#7)+#8=.03*(#7+#8)

and of course, #7+#8=#5

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