book Maths Puzzle Numerical Ability

Can someone help me?
Seven employees of an office donated a total of $172.06 during a charity drive. What was the average donation?
Lyn

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book Other Question

divide and simplify

m^2-16 over m^2-6m+9 divide by 8-2m over m-4m-12

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Help me please find the term of the expansion (x-y)^8 that contains y^7 and simplify it. Thank you so much!