Roberto's toy car travels at 30 centimeters per second (cm/sec) at high speed and 20 cm/sec at low speed. if the car travels for 20 seconds at high speed and then 30 seconds at low speed, what distance would the car have traveled

15 seconds at high speed

1 sec = 40 cm

15 sec = 40 x 15

15 sec = 600 cm

30 seconds at low speed

1 sec = 15 cm

30 sec = 15 x 30  

30 sec = 450 cm

Total distance = 600 + 450 = 1050 cm

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