Rob ran 286 miles in 2.5 months. luke ran 278 miles in 2 months. how much did rob and luke run a day? who ran the most miles ?

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.