devu covers 7 1/2 km in one hour. how much distance he will cover in 4 2/5 hours
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Step-by-step explanation:
7 1/2 km/hr or 15/2 km/hr
so in 2 4/5 hours or 14/5 hours
he would cover 15/2 * 14/5=21km in 2 4/5 hours
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