exam Maths Puzzle Numerical Ability

Okay...John Dashwood recieved a 75cent/h raise for his part ime job. He can now eard his former weekly salary of $63 working 2 h less. How many hrs. a week did he work before he recieved his raise?

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exam Other Question

I am not good at simplifying when it comes to multiplying

Square root of 7 x square root of 14

and
(2x square root 2x)(3 square root 5x)

and
square root of 7 (5 square root 5-3 sqaure root 7)

Thanks a million A triangle has angle measures of 2x+10, 4x and 5x+5. What are the measures of each angle from smallest to largest?