George can wash the windows of his apartment in 40 minutes, and his father can wash them in 60 minutes. How long would it take them to wash the windows together?

explain!

Which situation can be represented by 25 over 9

The distance from the park to the grocery store is 0.9 miles. Ezra runs 8 tenths of the distance and walks the rest of the way. How far does Ezra run from the park to the grocery store?

Jon walked 8 miles in 3 hours. Jim Wales 14 miles in 5 hours. Are these rates proportional? If no, who walked faster?

A = $1128.50, P = $925, r = 5.5%, t = ?

Mr. Potts, the college Pastry Chef, baked three apple pies, two blueberry pies, five cherry pies, and six key lime pies for the student fundraiser. What percent of the pies were apple?

What does seven plus seven equal

The amount of a sample remaining after t days is given by the equation P (1) - Al2where A is the initial amount of the sample and h is the half-life, in days, of the substance. A sample contains 60% of its original amount of Fermium- 257.

What order will result a final output of 131,065 when the first input is 64

The three incoming currents at a node in an electrical current measure. 7 amps,.68amps,.47 amps. two of the three outgoing currents measure. 8 amps and. 55 amps. find the measure of the third outgoing current

Your school raised 125% of it's fundraising goal. The school raised $6750 what was the goal?