Subject
Quantitative Aptitude
Topic
Speed & Distance
A certain 90-mile trip took 2 hours. Exactly 1/3 of the distance traveled was by rail, and this part of the trip took 1/5 of the travel time. What was the average rate, in miles per hour, of the rail portion of the trip?
A certain 90-mile trip took 2 hours. Exactly 1/3 of the distance traveled was by rail, and this part of the trip took 1/5 of the travel time. What was the average rate, in miles per hour, of the rail portion of the trip?
ক)
12 mphখ)
30 mphগ)
45 mphঘ)
60 mphঙ)
75 mphExplanation
QUESTION : একটি 90-mile যাত্রায় 2 ঘণ্টা সময় লেগেছিল। যাত্রার ঠিক 1/3 অংশ rail-এ ছিল, এবং এই অংশটি মোট যাত্রা সময়ের 1/5 অংশ নিয়েছিল। Rail অংশের গড় গতি কত miles per hour ছিল? সমাধান: *Rail-এর দূরত্ব: -মোট দূরত্বের 1/3 = 1/3 × 90 miles = 30 miles *Rail-এ ব্যয় করা সময়: -মোট সময়ের 1/5 = 1/5 × 2 ঘণ্টা = 0.4 ঘণ্টা *Rail-এর গতি নির্ণয়: -গতি = দূরত্ব ÷ সময় *Rail-এর গতি = 30 miles ÷ 0.4 ঘণ্টা = 75 miles per hour -সুতরাং, Rail অংশের গড় গতি ছিল 75 miles per hour। সঠিক উত্তর: (E) 75 mphRelated questions
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