Posted by **Tyler** on Monday, February 18, 2008 at 8:51pm.

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 -
**Reiny**, Monday, February 18, 2008 at 9:16pm
we are looking at the surface area.

so each wall is four times as large as before. (eg. if one wall is lw, then the corresponding new wall is (2l)(2w) or 4lw)

So it would take him 12 days

(BTW, I could paint that room in 3 hours).

## 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 ...
- maths plz help - Painters A and B take 3 hours to paint a room Painters B and C ...
- 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 ...

More Related Questions