exam Maths Puzzle Numerical Ability

Kevin is three times as old as Bob. Three years ago the sum of their ages was 22yr. How old is each now?

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exam Other Question

A cliff diver in Acapulco, Mexico, dives from about 17m above the water. The diver's height above the water h, in metres, after t seconds is modelled by
h= -4.9t squared + 1.5t + the perimeter of a triangle is 41 cm. the measure of the shortest side is 7 cm less than the middle side. the measure of the longest side is 5 cm less than the sum of the other 2 sides. find the lengths of the sides.