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Kelly invested her savings of $4,800. She invested part in mutal funds, at 9% per year an the rest in GIC's, at 10% per year. At the end of the year, the interest from the mutual funds investment was $43 less than the interest from the GIC investment. How much was...

The sum of Louise's age and Todd's age is 34 years. Five years ago, the sum of twice Louise's age and three times Todd's age was 61 years. How old are they now?

A suspension bridge with weight uniformly distributed along its length has twin towers that extend 75 meters above the road surface and are 400 meters apart. The cables are parabolic in shape and are suspended from the tops of the towers. The cables touch the road...