Anonymous

# Quick help can’t my head round this ?

Two model cars, A and B are in a race

They start together on the starting line

Assume each car travels at a constant speed

Car A takes 30 seconds to complete each lap of the track

CarB takes a whole number of seconds to complete each lap of the track

Two cars next cross the starting line together 150 seconds after the start of the trade

Find the four possible times that car b could take to complete one lap

You may find this information helpful

(150=2x3x5x5)

(30=2x3x5)

### 1 Answer

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- az_lenderLv 72 months ago
Car B's time to complete a lap could be 150 seconds, but it could also be some divisor of 150 that is NOT a multiple of 30. It could be 75 or 50 or 25.

Answer: 25s, 50s, 75s, 150s

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