- A3.5
- B3
- C4
- D5.6
Step-by-Step Solution
Moving towards each other, they close the gap at 45 + 75 = 120 km/h. Time = 420 ÷ 120 = 3.5 hours.
Answer: A) 3.5
Towns M and N are 420 km apart. At the same moment, one bus leaves M for N at 45 km/h and another leaves N for M at 75 km/h. After how many hours do the two buses meet?
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