book Maths Puzzle Numerical Ability

Joe start walking due north, Bob starts waling due east. When they stop Bob has walked 1 mile further than Joe and they are 5 miles apart as the crow flies. How far did Bob walk?

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book Other Question

-(x+6)+4x=3(x-1)+7 I need help. Here is the problem I have to solve.

Gina is paid 1.5 times normal hourly pay for each she works over 40 hours in a week. Last week she worked 48 hours and earned $634.40. What is her normal hourly rate?

Please help me.