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Start learning 50% faster. Sign in nowDownstream speed of the boat = 120/5 = 24 km/hr Upstream speed of the boat = 144/18 = 8 km/hr Speed of boat in still water = (24 + 8)/2 = 16 km/hr
The average number of books sold by Viren in first 3 months is 3000 and in first 4 months is 3800. If the number of books sold by him in 5th ...
The average weight of 4 persons is 56 kg. The heaviest person’s weight is 30 kg more than the lightest person’s weight. If the average weight of the...
If average of first 10 numbers is (n – 23) and the sum of remaining number is 925. Find the value of ‘n’, if the average of 20 numbers is ‘n’....
The average of 18 numbers is 12. If each number is increased by 2, what will be the mean of the new set of numbers?
The batting average for 27 innings of a cricket player is 48 runs. His highest score in an innings exceeds his lowest score by 157 runs. If these two in...
The average weight of three men is increased by 5 kg when one of them, whose weight is 100 kg is replaced by another man. What is the weight of the new ...
The average weight of 14 persons increases by 3.5 kg when a new person comes in place of one of them weighing 48 kg. The weight of the new person is.
If the average of s number is r⁴ and the average r number is s⁴, then find the average of all r+ s numbers
The average number of taxis of three colours (black, white and yellow) in a taxi stand is 140. The number of black taxis is 50 more than that of yellow ...
The average daily income of a daily wage worker, in the month of July is Rs. 120. If his average income on 1st 12 days of the month is Rs. 80 and on las...
