exam Maths Puzzle Numerical Ability

The area of a rectangle is 108 cm^2. the ratio of the width to the length is 3:4. Find the length and the width.

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exam Other Question

Solve for the unknown

8/52 = m/39

Please note the 8 is on top of the 52 and the m is on top of the 39 Sam earned $42,000 in selling antiques. He invested part at 15% simple interest and the rest at 12%, earning $5790 per year in interest. How much did he invest at each rate?