Question
Speed of a boat in still water is 10 kmph and speed of
stream is 7 kmph. A man rows to a place at a distance of 51 km and come back to starting point. The total time taken by him is:Solution
Rate upstream = 10 – 7 = 3 kmph Rate downstream = 10 + 7 = 17 kmph Time taken to go upstream = 51/3 = 17 hr Time taken to go downstream = 51/17 = 3 hr Total time = 17 + 3 = 20 hrs
More Boats and streams Questions
(24% of 500 - 20) ÷ 25 = ? ÷ 4
What will come in place of (?) in the given expression.
{(60% of 250) + √144} ÷ (3² - 4) = ?(6 × √361) × 2.5 = ? + 125
{(420 ÷ 28)% of 1400} ÷ 7 = ?
3 √8 × √36 × 13 = ? × √169
? = 120% of (652 ÷ 132 ) + 33 × 8
(3/7) of 700 + 33(1/3)% of 339 - 69 =?
(122 - 82 ) of 52 + 52 = ?2Â
(34.88% of 699.79) + 40.030 × 17.88 of 11.86 + 16.21 =? + (7.22)²
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