Subject
Quantitative Aptitude
Topic
Speed & Distance
Ali starts from his home at 5 a.m. and travels towards Chittagong at an average speed of 30 km/hr. Belal starts from the same home at 7 a.m. and travels along the same route towards Chittagong, overtaking Ali at exactly 11 a.m. At what speed, in km/hr, was Belal travelling?
Ali starts from his home at 5 a.m. and travels towards Chittagong at an average speed of 30 km/hr. Belal starts from the same home at 7 a.m. and travels along the same route towards Chittagong, overtaking Ali at exactly 11 a.m. At what speed, in km/hr, was Belal travelling?
ক)
35খ)
40গ)
45ঘ)
48ঙ)
50Explanation
QUESTION : Ali সকাল 5 টায় বাড়ি থেকে বের হয়ে গড়ে 30 km/hr বেগে চট্টগ্রামের দিকে যাত্রা করে। Belal একই বাড়ি থেকে সকাল 7 টায় বের হয়ে একই রুটে চট্টগ্রামের দিকে যাত্রা করে এবং ঠিক সকাল 11 টায় Ali-কে overtake করে। Belal কত km/hr বেগে যাত্রা করছিল? সমাধান: *Ali'র ভ্রমণ: -সময়: 5 a.m. থেকে 11 a.m. = 6 ঘণ্টা -দূরত্ব = 30 km/hr × 6 ঘণ্টা = 180 km *Belal'র ভ্রমণ: -সময়: 7 a.m. থেকে 11 a.m. = 4 ঘণ্টা -দূরত্ব: Ali'র সমান = 180 km *Belal'র গতি: -গতি = দূরত্ব ÷ সময় -গতি = 180 km ÷ 4 ঘণ্টা = 45 km/hr *সুতরাং, Belal 45 km/hr বেগে যাত্রা করছিল। সঠিক উত্তর: (C) 45 km/hrRelated questions
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