Question
A boy can swim in still water at a speed of 7 km/hr. If
the speed of the current would have been 5 km/hr, then the boy could swim 36 kmSolution
Rate downstream = 7 + 5 = 12 kmph Rate upstream = 7 – 5 = 2 kmph Time taken in swimming 36 km downstream = 36/12 = 3 hours Time taken in swimming 36 km upstream = 36/2 = 18 hours From, given options, boy can swim 36 km downstream in 3 hrs.
More Boats and streams Questions
√1225 ÷ √49 × √225 = ?2 – 6
- What will come in the place of question mark (?) in the given expression?
(√1089 + 47) X 4.5 = ? - √256 X 10 What will come in place of the question mark (?) in the following expression?
40% of 150 – ?% of 80 = 25% of 400
60% of 120 – ?% of 64 = 20% of 200
{(80% of 650 + 25 × 12) – 20 × ?} = 760
If 840 ÷ 12 + 1025 ÷ 25 - n + 45 × 4 = 960 ÷ 16 × 132 ÷ 44, then the value of n is:
5.45% of 1854 – 37.5% of 1096 = ? – 48% of 630
