exam Maths Puzzle Numerical Ability

If the length of the side of a square is increased by 6 units, the area is multiplied by 4. Find the original side length.

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exam Other Question

A man has 29 coins in his pocket, all of which are dimes and quarters. If the total value of his change is 590 cents, how many dimes and how many quarters does he have? A backyard has dimensions 3 4/5 yards by 1 1/2 yards. What is the area of the backyard in square yards (yd^2)?