3. A bakery truck is 20 mph faster than the speed of the children chasing it. The bakery truck travels 250 miles in the same time it takes the kids to travel 150 miles. Find the speed of the bakery truck and the kids.

Define T as the speed of the bakery truck in mph.

250/T = 150/(T-20)

Cross multiply

150T = 250(T-20)

150T = 250T-5000

100T = 5000

T = 50

Bakery truck speed = 50 mph

Kids' speed = 30 mph