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Let the time be x hrs. => 25x + 35x = 240 => 60x = 240 => x = 240/60 = 4 hrs
A train overtakes a bus traveling at a speed of 5 m/s in 8 seconds. If the length of the train is 160 meters, determine the speed...
A vessel is full of a mixture of kerosene and petrol in which there is 18% kerosene, 8 litre are drawn off and then the vessel is filled with petrol. Re...
In a zoo, tiger and ostrich were counted. If heads were counted, there are 400 and if legs are counted there were 820. How many ostrich are there?
In a jar initially containing 'm' liters of pure milk costing Rs. 20 per liter, 50% of the milk is taken out, and honey is added to the remaining milk. ...
Alloy A contains iron and copper in ratio 4:5. Alloy B contains iron and copper in ratio 3: 4. If 63kg of alloy A and 56 kg of alloy B are mixed, then w...
A shopkeeper has 60 kg rice a part of it, he sells at the profit of 30% and rest at loss of 10% and he get the loss of 8% so what is the quantity sold a...
Neha spends 80% of her monthly income. Next month, her income increased by 20% while her expenditure increased by 15%. Due to this, her monthly savings ...
A school conducted a survey on the number of students participating in various extracurricular activities over three years. The data is as follows (in n...
210 liters of oil was poured into a tank, which was still 30% empty. How much oil must be poured into the tank to fill it to the brim?
