Subject
Quantitative Aptitude
Topic
Speed & Distance
A man started at 8 am from his home, walked at the rate of 3 km/hr and reached his office 45 minutes late. The next day, he started at the same time and walked at the rate of 5 km/hr and reached his office 15 minutes earlier than the scheduled time. What was the distance between his office and home?
A man started at 8 am from his home, walked at the rate of 3 km/hr and reached his office 45 minutes late. The next day, he started at the same time and walked at the rate of 5 km/hr and reached his office 15 minutes earlier than the scheduled time. What was the distance between his office and home?
ক)
6 kmখ)
7.5 kmগ)
9 kmঘ)
12 kmঙ)
none of theseExplanation
QUESTION : একজন ব্যক্তি সকাল 8 টায় বাড়ি থেকে বের হয়ে 3 km/hr গতিতে হেঁটে অফিসে 45 মিনিট দেরিতে পৌঁছায়। পরের দিন, সে একই সময়ে বের হয়ে 5 km/hr গতিতে হেঁটে নির্ধারিত সময়ের 15 মিনিট আগে অফিসে পৌঁছায়। তার বাড়ি থেকে অফিসের দূরত্ব কত? সংক্ষিপ্ত ব্যাখ্যা: -প্রথম দিন: সময় = দূরত্ব / গতি = x / 3 = নির্ধারিত সময় + 0.75 ঘণ্টা -দ্বিতীয় দিন: সময় = দূরত্ব / গতি = x / 5 = নির্ধারিত সময় - 0.25 ঘণ্টা -দুই দিনের সময়ের পার্থক্য = 1 ঘণ্টা -সমীকরণ: x / 3 - x / 5 = 1 -সমাধান করে পাই: x = 7.5 km সুতরাং, বাড়ি থেকে অফিসের দূরত্ব 7.5 km।Related questions
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