book Maths Puzzle Numerical Ability

May I get some help with this please?:
A bank loaned out $120,000, part of it at the rate of 8% annual mortgage interest and the rest at the rate of 18% annual credit card interes

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book Other Question

A. Suppose you travel north for 65 kilometers than travel east 75 kilometers. How far are you from the starting point? Show work

B. The volume of a cube is given by V=s^3. Find the length of a side of a cube if the Volume is 1000 cm^3 An experienced carpenter can panel a room 3 times faster than an apprentice can. Working together they can panel the room in 6 hours. How long would it take each one working alone to do the job?