Question
A boat running downstream covers a distance of 42 km in
6 hrs and covering the same distance upstream in 14 hrs. What is the speed of a boat in still water?Solution
Downstream speed = 42/6 = 7 km/hr Upstream speed = 42/14 = 3 km/hr So speed of boat in still water = (7 + 3)/2 = 5 km/hr
More Boats and streams Questions
15(2/9) + 11(2/9) + 17(1/9) + 13(4/9) = ?
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1885 ÷ 64.98 + 7.29 + ? = 69.09
‘A’ and ‘B’ invested Rs. 5000 and Rs. 4200, respectively in a business, together. After 7 months, ‘A’ withdrew 25% of his initial investment...
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
What value should come in place of (?) question mark.
√2025 − √729 + (24 × 32) ÷ 6 = ?
What will come in the place of question mark (?) in the given expression?
(30% of 1200 + 50% of 3200) ÷ 98 = ?
(?) + (35)2 = (140)2 – (80)2 + 20% of 5480
7292/3 = ?
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