A can complete a journey in 10 hours. He travels first of the journey at the rate of 21 me/ hr and second half at the rate of 24 km/hr. find the total journey in km. 

A    220 km

B     224 km

C    230 km

D    234 km

Solution

Correct Answer: Option B

 

in first five hours he journeyed=21x5=105 km in second five hours he journeyed=24X5=120 km total=(105+120)=225 km

 

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