A man completes a journey in 10 hours. He travels first half of the journey at the rate of 42 km/hr and second half at the rate of 48 km/hr. Find the total journey in km.
Explanation:
Let x be the total distance travelled.
12x42+12x48=10⇒x42+x48=20
⇒ x = 448 kms
Hence, option (b).
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