book Maths Puzzle Numerical Ability

Lynn has $8.58 in quarters and pennies. If she has eight times as many pennies as quarters, how many of each does she have?

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book Other Question

A cord is 189 feet long. It is to be cut into three pieces so that the second piece is twice as long as the first, and the third is twice as long as the second. Find the length of each piece log3(5x+5) - log3(x2 - 1) = 0