Question

1.Sophie checks her bike for repairs every 9 days and Susan check hers every 12 days. If they both check their bikes today, after how many days do they next both check their bike again?

Answer 1

Given Sophie checks her bike for repairs every 9 days and Susan check hers every 12 days.

If they both check their bikes today,

Find LCM of 9 and 12.

3 | 9 , 12

________

** 3 , 4

LCM(9,12) = 3×3×4 = 36

Therefore.,

After 36 days Sophie and Susan both check their bikes again.

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