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ATQ, Let the speed of the current be 'p' km/hr Therefore, speed of the boat in still water = 1.5p km/hr According to the question, 90/(1.5p – p) = 22.5 Or, 0.5p = 4 Or, p = 8 km/hr Therefore, speed of current = p = 8 km/hr Therefore, speed of boat in still water = 1.5p = 12 km/hr According to the question, New speed of the current = (8 + 4) = 12 km/hr Therefore, downstream speed of the boat = 12 + 12 = 24 km/hr Downstream distance covered in 5 hours = 24 × 5 = 120 km
A water tap fills a tub in 'p' hours and a sink at the bottom empties it in 'q' hours. If p < q and both tap and sink are open, the tank is filled in...
If A borrowed Rs. P at x% and B borrowed Rs. Q (>P) at y% per annum at simple interest at the same time, then the amount of their debts will be equal...
In an examination 73%of the candidates passed in quantitative aptitude test, 70% passed in General awareness and 64% passed in both. If 6300 failed in b...
`2/5` ___ 15 ___ 115___ 20 ___ 4 = 581
A box contains 6 blue shirts, 7 yellow shirts and 9 pink shirts. In how many ways can 4 shirts be drawn from the box, if at least one blue shirt, one ye...
3,000 ___ 15 ___ 4 ___ (20)² ___ 20 = 32,200
If '+' means '-', '-' means '+', '×' means '÷', and '÷' means '×', then the value of 42 – 12 × 3 + 8 ÷ 2 + ...
A man invested a sum of money at compound interest. It amounted to Rs. 2420 in 2 years and to Rs. 2662 in 3 years. Find the sum.
