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A car takes 2 hours to reach a destination at the speed of 60 km/h, then the time taken to reach the destination at the speed of 80 km/h is

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$212 h$

$12 h$

1 h

$112 h$

answer is D.

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Detailed Solution

$t α 1 d$

$t 1 = 2 h o u r s, t 2 = x, d 1 = 60 c m / h, d 2 = 80 k m / h$

$t 1 d 1 = t 2 d 2$

$2 × 60 = x × 80$

$∴ t 2 = 32 = 112 h$

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