Subject
Quantitative Aptitude
Topic
Speed & Distance
A train covers the distance x between two cities in y hours, arriving 2 hours late. What rate would permit the train to arrive on schedule?
A train covers the distance x between two cities in y hours, arriving 2 hours late. What rate would permit the train to arrive on schedule?
ক)
x/y-2খ)
x/(y-2)গ)
xy-2ঘ)
x/(y+2)ঙ)
none of theseExplanation
QUESTION: একটি train দুটি শহরের মধ্যে x দূরত্ব y ঘণ্টায় অতিক্রম করে, 2 ঘণ্টা দেরিতে পৌঁছায়। কোন গতিতে train-টি সময়মত পৌঁছাতে পারত? সমাধান: *প্রদত্ত তথ্য বিশ্লেষণ: -দুই শহরের মধ্যে দূরত্ব = x -প্রকৃত সময় = y ঘণ্টা -train 2 ঘণ্টা দেরিতে পৌঁছায় -আমাদের সেই গতি বের করতে হবে যাতে train সময়মত পৌঁছাতে পারে *নির্ধারিত সময় নির্ণয়: -নির্ধারিত সময় = y - 2 ঘণ্টা *প্রয়োজনীয় গতি নির্ণয়: -গতি = দূরত্ব / সময় -প্রয়োজনীয় গতি = x / (y - 2) অতএব, সঠিক উত্তর হল (B) x/(y-2)।Related questions
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