A car travels km at an average speed of km/h. Another car makes the same journey in minutes less. What is its average speed?
Answer and explanation
Correct answer: B. 55.4 km/h
- Step 1: First car's time: h minutes.
- Step 2: Second car's time: minutes h.
- Step 3: Speed km/h.
Answer
55.4 km/h.
Why not the others: 52 km/h: This adds km/h without working out the new time. 52.2 km/h: This takes minutes off hours as hours, giving h. 0.9 km/h: This divides by , the new time in minutes, without converting to hours.
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