A car travelled 80% of the distance from town A to B by traveling at T hours at an average speed of V km/h. The car travels at an average speed of S km/h for the remaining part of the trip. Which of the following expressions represents the average speed for the entire trip?
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Q:
A car travelled 80% of the distance from town A to B by traveling at T hours at an average speed of V km/h. The car travels at an average speed of S km/h for the remaining part of the trip. Which of the following expressions represents the average speed for the entire trip?
- 112VS/(9V+S)false
- 25VS/(4S+V)true
- 3VT/3Sfalse
- 49VS/(4S+V)false
- 5None of thesefalse
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