exam Maths Puzzle Numerical Ability

1. (Age) a father is now three times as old as his son. Twelve years ago he was six times as old as his son. Find the present age of each.

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4x-(x+14)=4x+3 Please Help! # 81 Skydiving. If there were no air resistance, then the height (in feet) above the earth for a skydiver t seconds after jumping from an airplane at 10,000 feet would be given by h(t) = -16t2 (the 2 is two to the power) + 10,000