book Maths Puzzle Numerical Ability

The length of a rectangular frame is 8cm more than the width. The area inside the frame is 105 sq cm. Find the width of the frame.

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book Other Question

use change of base formula and calculator to evaluate. round to 3 decimal places

log(basesqrt5)8
what is 8(4u-1)- 12u=11(2u-6)