Question

Your mother takes u to your grandparents house for dinner. She drives 60 mins at a constant speed of 40 mph. She reaches the highway and quickly speeds up and drives another 30 mins at a constant speed of 70 mph

Tell me how to do this In formula I need to find distance

Answer 1

distance formula distance=speed×time

Answer 2

60 mins= 1 h . 30 mins = 0.5 (1/2) h
before she speeded up, she had gone: s = t×v = 1h ×40 mph = 40 (m)
the length of the high way she drove: s = t×v = 0.5h × 70 mph = 35 (m)
the length of the way from your house to grandparents' house: 40+35=75 (m)