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# Physics and Algebra

1. Jeff rode his bike 45 miles to get to the park, and his co-worker Chris rode his bike 70 miles to meet Jeff at the park. Chris averaged 5 mph more than Jeff, and his trip took one-half hour longer than Jeff. How fast was each traveling?

2. Mike found a good deal on some golf clubs at an online auction site. The clubs were selling for \$238 CAN. He wanted to find out if this was a good deal, so he check the newspaper to find out the current exchange rate. He saw that today the Canadian exchange rate was \$1.00US to \$1.52 CAN. If Mike decides to buy these golf clubs, how much will it cost in US dollars?

#### Solution Preview

1. Jeff rode his bike 45 miles to get to the park, and his co-worker Chris rode his bike 70 miles to meet Jeff at the park. Chris averaged 5 mph more than Jeff, and his trip took one-half hour longer than Jeff. How fast was each traveling?
Sol: Suppose Jeff was traveling at x mph and Chris was traveling at y ...

\$2.19