A man complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr
and second half at the rate of 24 km/hr. Find the total journey in km.
121 km
242 km
224 km
112 km
Explanation:
Average Speed = $ \dfrac{2 \times 21 \times 24}{21+24}$ = 22.4 km/hr
Total distance = 22.4 $\times $ 10 = 224 km
Average Speed = $ \dfrac{2 \times 21 \times 24}{21+24}$ = 22.4 km/hr
Total distance = 22.4 $\times $ 10 = 224 km