book Maths Puzzle Numerical Ability

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

Read Solution (Total 0)

book Other Question

Emily received $1,240 from selling her car. She inversted part of the money at 8% and the rest at 7%. Her overall return was 7.59%. How much did Emily invest in thew account which tell if lines are parrallel, perpindicular, or neither!
3x-8y=313
x=367/5-8/5y