exam Maths Puzzle Numerical Ability

Solve

sq rt x + 2 + 15 = 11 (Show your check).

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exam Other Question

Can you please tell me how to solve this? [100*(x-500)-1350]*14=10,000

Thanks,
Tanya what is percent of 40 out of 73? i dont understand. do i have to make a proportion. how do i make a proportion?