book Maths Puzzle Numerical Ability

The diagonal of a square television screen measures 18 inches. What is the length of the sides?

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book Other Question

I have 5 units out of 36 in compliance with a regulation. How do I figure out what percentage that is?

36 divided by 5 = 7.2%
5 x 100 divided by 36 = 13.8

Which is the corre
Solve for b: 6-3(b+4)=-(2b-6)-(b-1)