An airplane travels 1560 miles in 3 hours flying with the wind. The return trip takes 4 hours. Find the rate of the plane in still air and the rate of the wind.

Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?

The product of two negative rational numbers is always zero sometimes zero never zero

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit