exam Maths Puzzle Numerical Ability

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this is a word problem


becky wants to buy a computer that costs $1590. if becky earns $6.25 per hour, what is the minimum number of whole hours that she must work to earn enough money to buy the computer?

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exam Other Question

I have no idea how to do this. Please help.

Solve the following equations for the unknown.

x/3 - 7/8 = 2/5(x + 15/4)
Montrose and Salem are 10 miles apart. Karen lives 12 miles from Salem. What are the possible distances Karen lives from Montrose?