exam Maths Puzzle Numerical Ability

A father walks 36 miles in 12 hours, while his son covers the same distance on a bicycle at twice the father’s rate of speed. At this rate, how many miles would the bicycle rider travels in 9 hours?

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exam Other Question

65m+230=70m+900 Can someone help e solve this problem?

I need to solve: 10x - 1/4 = 9x + 3/8

Thank you,
sher