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Let the downstream speed of the boat and speed of the boat in still water be 13x km/hr and 12x km/hr, respectively Therefore, speed of the stream = downstream speed - speed of boat in still water Or, speed of stream = 13x - 12x = 'x' km/hr And, upstream speed of the boat = 12x - x = 11x km/hr Or, 11x = 44 Or, 'x' = 4 So, downstream speed of the boat = 13x = 13 X 4 = 52 km/hr Required time = 208 ÷ 52 = 4 hours
Length and breadth of a rectangular field is (x + 5) cm and (x – 4) cm, respectively. If the cost of ploughing the field at a rate of Rs. 7 per cm² i...
Ajay lists an item at 42% higher than its cost price and gives a 20% discount on this marked price. Determine the percentage of p...
In what ratio should Darjeeling Tea costing Rs. 500 per kg mixed with Assam Tea costing Rs. 350 per kg, so that by selling the mixture at Ra. 480 per ...
A trader mixes two types of rice varieties with a cost of Rs.68 and Rs.80. If he sells the mixture of Rs.88 at 25% profit, in what ratio he mixes two ty...
In what ratio rice at 47 Rs/kg should be mixed with the rice at 28 Rs/kg so that selling mixture at Rs 45 per kg gives the profit of 25% if the quantity...
A car travel 20km/h for 30 min and at x km/h for 45 min. If the average speed of the car for entire journey is 14 km/h find the value of x.
If 120 liters of milk solution contains 60% milk, how much milk should be added to make the solution 80% milk?
A shopkeeper has 76 kg rice a part of it, he sells at the profit of 48% and rest at loss of 28% and he get the loss of 16% so what is the quantity sold ...
In a Mixture, the ratio of Milk and Water is 7: 5. If 12 litre mixture drawn off and replace by 8 litre water then the ratio of Milk and Water become 1...