A car travelling with $$\frac{5}{7}$$ of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of the car ?

A car travelling with $$\frac{5}{7}$$ of its usual speed covers 42 km

1.	A car travelling with $$\frac{5}{7}$$ of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of the car ?
A.	$17\frac{6}{7}$$ km/hr
B.	5 km/hr
C.	5 km/hr
D.	0 km/hr
Answer» C. 5 km/hr

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A car travelling with $$\frac{5}{7}$$ of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of the car ?

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