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.
সমাধান
সঠিক উত্তর: 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