Question

On Monday, Ms.Cartier drove 240 miles in 4 hours. On Tuesday, she drove 174 miles in 3 hours. On which day was her average speed faster, and how much faster was it?

Answer 1

The average speed is given by the ratio between the distance travelled and the time it took to travel, therefore, Ms. Cartier average speed on monday was

$v_m=\frac{240}{4}=60$

60 miles/h, and, her average speed on tuesday was

$v_t=\frac{174}{3}=58$

58 miles/h.

From those values, we can conclude that Ms. Cartier had a faster average speed on monday by 2 miles/h.