A bicycle rider rides four stages of a race in 2 hours and 45 minutes. The four stages are named with four different

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A bicycle rider rides four stages of a race in 2 hours and 45 minutes. The four stages are named with four different colors: blue, yellow, red, and white. What is the rider's average speed for the whole race?

1) The red and blue stages combined are 55 miles long
2) The blue and yellow stages combined are 42 miles long

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