# percentage

posted by .

Choon yong was asked to paint a wall of area 84 meter square.In one hour,he had painted 21meter square.
a)what percentage of the wall was left unpainted?

• percentage -

I've done two for you above. You should have the idea by now.

## Similar Questions

1. ### math

paint express charge \$30 per gallon of paint plus \$1.10 per square foot of wall space. color creations charges \$24 per gallon of paint plus \$1.20 per square foot of wall space. robert estimates he will need four gallons of paint for …
2. ### math

a student is painting one wall of a room. a square window is located in the middle of the wall to be painted. the window measures 3 feet on one side. the area of the wall, not including the window, is 80ft squared. find the height …
3. ### Algebra1

the area of a wall is 15 square feet. if i can paint 180 sq inches per hour how many hour will it take me to paint the wall.
4. ### math

a+boundary+wall+of+your+house+is+divided+in+to+10+vertical+strips+of+equal+width+you+painted+4+strips+of+wall+with+pink+3+with+yellow+and+3+strips+with+green+paint+find+the+percentage+area+of+wall+painted+with+pink+colour
5. ### math

A wall has an area of 7.2 square meter. It was painted yellow and brown. The area of the wall painted yellow was 3 times as large as the area painted brown. What was the ratio of the area painted yellow to the area painted brown?
6. ### math

a square foot of wall space needs 1/8 quart of paint. terrence has 7 quarts of paint, but uses 2 quarts to paint a pipe. how many square feet of wall can he paint with the rest of the paint?
7. ### Algebra

paint express charge \$30 per gallon of paint plus \$1.10 per square foot of wall space. color creations charges \$24 per gallon of paint plus \$1.20 per square foot of wall space. robert estimates he will need four gallons of paint for …
8. ### Math

Erica painted all but 6 square feet of a wall in the shape of a square. How many square feet of the wall did she paint?
9. ### Math

Erica painted all but 6 square feet of a wall in the shape of a square. How many square feet of the wall did she paint (below) What is this situation in an algebraic expression?
10. ### Math

Erica painted all but 6 square feet of a wall in the shape of a square. How many square feet of the wall did she paint What is this situation in an algebraic expression?

More Similar Questions