Subject
Quantitative Aptitude
Topic
Speed & Distance
A cyclist rides 24 km at 16 kmph and further 36 km at 15 kmph. Find his average speed for the journey. ( একজন সাইকেল আরোহী 24 km পথ 16 kmph বেগে এবং আরো 36 km পথ 15 kmph বেগে চালনা করে । সমগ্র ভ্রমণপথে তাঁর গড় বেগ বের করুন ।)
A cyclist rides 24 km at 16 kmph and further 36 km at 15 kmph. Find his average speed for the journey. ( একজন সাইকেল আরোহী 24 km পথ 16 kmph বেগে এবং আরো 36 km পথ 15 kmph বেগে চালনা করে । সমগ্র ভ্রমণপথে তাঁর গড় বেগ বের করুন ।)
ক)
15.38 kmphখ)
15.5 kmphগ)
16 kmphঘ)
None of theseExplanation
মোট দূরত্ব = {(24/16)+(36/15)} hr [ সময়=দূরত্ব/বেগ] = {(3/2)+(12/5)} = {(15+24)/10} = (39/10) গড় বেগ = (মোট দূরত্ব/মোট সময়) = {60÷(39/10)} = {60×(10/39)} = (200/13) = 15.38 (প্রায়)Related questions
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