exam Maths Puzzle Numerical Ability

A roofer earns $24 per hour plus $36 per hour overtime. If he puts in 40 hours of regular time during a certain week and he wishes to earn $1200, how many hours of overtime should he work?

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exam Other Question

saturn is about 1.429 X 10^9 km from the sun. how many miles is saturn from the sun? write your answer in scientific notation. How do you solve a equation seperated by exponents like with a number and a exponent and the the letter x?