13. On the banks of the river Yamuna there are twobathing points in Va

13. On the banks of the river Yamuna there are twobathing points in Varanasi and Patna. A diya left inthe river at Varanasi reaches Patna in 24 hoursHowever, a motorboat covers the whole way to andfro in exactly 10 hours. If the speed of the motorboatin still water increased by 40% then it takes the motorboat 7 hours to cover the same way (from Varanasi toPatna and back again). Find the time necessary forthe motorboat to sail from Varanasi to Patna when itsspeed in still water is not increased:(a) 3 hours(b) 4 hoursCE (0) (di of these(c) 4.8 hoursndback

Answer»

60किमी / घंटा की रफ्तार से चलने वाली एक ट्रेन9सेकंड में एक ध्रुव को पार करती है। ट्रेन की लंबाई क्या है?

d) is the right answer of the following

answer this question is 150m

a) 3 hours is the correct answer

c) is the correct answer