Posted by **Tyler** on Tuesday, February 26, 2008 at 8:55pm.

A painter needs 3 days to paint the walls of a room. How long would it take him, working at the same rate, to paint a room that is twice as long, twice as wide, and twice as high as the original room?

- Math -
**drwls**, Wednesday, February 27, 2008 at 12:46am
The area of all the walls scales with the square of the linear dimension, as they remain similar in shape but increase in size. Doubling all the linear dimensions multiplies tha total area by 4. Painting the enlarged room therefore takes 4 x 3 = 12 days.

- Math -
**Lramirez**, Tuesday, February 14, 2012 at 8:52pm
At an automotive repaire shop, 3.5 h of labour costs $311.50.

a) What is the labour charge a 5-h job?

b) How could you check you answer?

## Answer this Question

## Related Questions

- Math - A painter needs 3 days to paint the walls of a room. How long would it ...
- math - If painter A can paint a room in three hours by themselves, and painter B...
- Geometry - A gallon of paint costs $20 and covers 465 square feet. Three coats ...
- Intermediate Algebra - Joe can paint a room in 6 hours while Sue can paint the ...
- Math help please - A painter used 1 1/2 gallons of paint to paint 3/4 of a room...
- Math - A painter can paint a racquetball court in 8 hours. His assistant needs ...
- Math - Jayce wants to paint her room Duke Blue.Her room is 12 ft long ,12 ft ...
- Word problem - Edward can paint a bedroom in 3hr. Jeb can paint the same room in...
- math - nadia can paint a room in 5 hours Nat can paint the same room in 7 hours ...
- Algebra - If Dale can paint a room in 5 hours alone and Chip can paint the same ...

More Related Questions