a car traveled at a constant rate for 2 hrs. road construction forced the car 2 travel at 30 km/h less for nxt 30 min Thetotaldistancedrivenwas185 km.whatwastherateforeachpart? how far was each part?

Question

PLEASE HELPI NEED ANSWER IN 54 MINS answer would be greatly appreciated

Answer 1

Let x be the speed the car traveled for the first part of the trip

First part, the car traveled 2hs • x km/h

Second part of the trip the car traveled 30min • (x-30km/h) which is the same as 1/2hs • (x-30km/h)

Total distance is 185 or 2hs • x km/h+1/2hs • (x-30km/h) =185 or 2x+1/2(x-30)=185

Solving this equation you will find x=80km/h

Using this car traveled 160km and second part car traveled 25km