exam Maths Puzzle Numerical Ability

In three years, Alex will be 3 times as old as Precy.
A year ago, Alex was 7 times as old as Precy. How old are they now?

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exam Other Question

A car rental company charges $25 a day plus $.10 a mile. If I rented a car for 3 days and was charged $105. For how many miles did I get Charged? If I actually drove the car 250 miles, did I get charged the right amount. 14s+36=-6s