book Maths Puzzle Numerical Ability

A = B + 3 (4 - C)
If B equals 5 and C equals 2, what is the value of A?

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book Other Question

I am trying to remember how to do radical algebraic expressions and if you could just give me a sample that would be great an example problem is

150 over (square root sign) 300 and you have to simplify it.

PLEASE HELP 6qt 8 oz divided 4