Mathematics
WAEC 2005
A train moving at a uniform speed covers 36km in 21 minutes. How long does it take to cover 60km?
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A.
35 mins
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B.
40 mins
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C.
45 mins
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D.
90 mins
Correct Answer: Option A
Explanation
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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