Question
A man can row at 36 km/hr in still water. In a stream
which is flowing at 12 km/hr, it takes him 3 hrs to a place and back. How far is the place?Solution
Let distance= x km, Rate upstream = 36 - 12 = 24 km/hr Rate downstream = 36 + 12 = 48 km/hr. ∴ Time taken upstream= x/24 and Time taken downstream= x/48 ∴ x/24 + x/48 = 3 ⇒ 3x/( 48) = 3 ⇒ x = 48 km.
More Boats and streams Questions
(3374 ÷ 125.13)1/3 + (362 ÷ 11) = ?2 – 27.79
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
102.89 of 3.08 = 59.98% of 499.94 + √?
11.992 + (6.01 × 5.98) + ? = 350.03
7.898 × ? + 139.89` ` `-:` 14.23 = 4004.04 – 353.89
` `
156.76 + 14.08² + ?³ = √625.12 * 26.87
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
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