The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
Let us assume all eight people weight 65 Kgs each. If I replace one of them by a new person of weight say X Then, I can write the following equation: (65 * 7 + X) / 8 = 65 + 2.5 Solving this equation , X = 85 Kgs
An alloy contains magnesium, copper and zinc in the ratio 3 : 4 : 2 and another alloy contains copper, zinc and nickel in the ratio 4 : 5 : 3. If equal weights of both alloy are melted together to form a third alloy, then what is the weight of copper per kg in new alloy?
The average weight of 19 students was 50 kg. By the admission of a new student the average weight is reduced to 49.6 kg. What is the weight of the new student?
In a boat 25 persons were sitting. Their average weight increased one kilogram when One man goes and a new man comes in. The weight of the new man is 70kgs. Find the Weight of the man who is going.
A thrifty person saves candle stubs to form into new candles.
Seven stubs are needed to make each new candle.
If there are 241 stubs, how many candles can possibly be made in total?
