Question

Kids were playing baseball outside the house and broke 20% of the windows. If they broke 6 windows, how many windows did the house have? Find the answer by showing two different methods.

Answer 1

windows * 20 percent = 6

windows * .2 = 6

divide each side by .2

windows = 6/ .2

window = 30 windows

6 windows         20

----------------  = ------------

total windows    100

cross products

6 * 100 = 20 * total windows

600 = 20 * total windows

divide each side by 20

600/20 = total windows

30 = total windows