Question

Help 20 points just ask

Answer 1

proportion:

38/2•x/7

cross multiply:

(7)(38)=2x

simplify:

266=2x

divide:

x=133

133 windows

Explanation:

Answer 2

133

Explanation:

If he cleaned 38 windows in 2 hours then he cleaned:

38 win / 2 hours = 19 windows per hour.

If he goes for 7 hours then he cleans a total of: 19 * 7 = 133 windows in 7 hours.