11. A car can finish a certain journey in 10 hours at speed of 32 km/h. By how much should its speed be increased so that it may take only 8 hours to cover the same distance ?
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By how much should its speed be increased so that it may take only 8 hours to cover the same distance? Let us consider the speed of the car as 'x' km/hr. Increased speed = 60 – 48 = 12km/hr. ∴ The speed should be increased by 12 km/hr. to cover the same distance.
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