The speeds of two cars are in the ratio 9:17. If the second car covers 510 kms in 5 hours, then the speed of the first car is

48 km/hr

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54 km/hr

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63 km/hr

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60 km/hr

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None of these

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Solution

The correct option is B
54 km/hr

Let the speed of two cars be 9x and 17x km/hr.

Then, 17x = $\frac{510}{5}$ = 102

x = $\frac{102}{17}$ = 6

Speed of first car = (9 $\times$ 6) km/hr = 54 km/hr

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The speeds of two cars are in the ratio 9:17. If the second car covers 510 kms in 5 hours, then the speed of the first car is

The correct option is B 54 km/hr Let the speed of two cars be 9x and 17x km/hr. Then, 17x = 5105 = 102 x = 10217 = 6 Speed of first car = (9 × 6) km/hr = 54 km/hr

The correct option is B
54 km/hr

Let the speed of two cars be 9x and 17x km/hr.

Then, 17x = $\frac{510}{5}$ = 102

x = $\frac{102}{17}$ = 6

Speed of first car = (9 $\times$ 6) km/hr = 54 km/hr