A train moving at a uniform speed covers 36km in 21 minutes. How long does it take to cover 60km?

  • A 35 mins
  • B 40 mins
  • C 45 mins
  • D 90 mins
waec 2005mathematics

The correct answer is A. 35 mins

Since 36km in 21 minutes

1km in \(\frac{21}{36}\)minutes

60km in \(\left(\frac{21}{36}\times 60\right)\)minutes = \(\frac{70}{2}\)min

= 35 mins

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