3 Bike A travels 4/5 of a 1000m course and Bike B travels 1/3 of a 1800 m, course. which bike travelled the longer distance?
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That probability is about 0.4207.
You can square the whole problem to cancel out the square root. Might make things easier.
x = 18 1/3
x - 20 + 2x = 35
- 20 + 3x = 35
3x = 35 + 20
3x = 55
x = 55/3
x = 18 1/3