Question
Present age of βMβ is 25% more than that of βNβ.
5 years ago, βMβ was 1.5 times as old as βNβ. Find the present age of βNβ.Solution
Let the present age of βNβ be βxβ years
Therefore, present age of βMβ = 1.25x years
ATQ;
(1.25x β 5) = 1.5 Γ (x β 5)
Or, 1.25x β 5 = 1.5x β 7.5
Or, 2.5 = 0.25x
Or, x = 10
Therefore, present age of βNβ = 10 years
- An alloy contains 50% iron, 30% zinc, and 20% aluminum. How much iron should be added to 30 kg of the alloy so that the new alloy contains 60% iron?
A container holds a 512 ml mixture of milk and water in a 9:7 ratio. If 'x' ml of water and (x + 36) ml of milk are added, the new ratio of milk to wate...
A vessel of capacity 1000 litres is full of milk. x litres are removed and replaced with water, and this is done three times. If in the end there are 51...
In a 150-liter mixture, the ratio of petrol to diesel is 4:1. To obtain a final mixture with 25% diesel, how much diesel needs to be added to the existi...
A container was filled with pure milk. A person removed 10 litres of milk and refilled it with water to hide the act. He repeated the same act once agai...
Quantity of water in a 360 litres mixture (Milk + Water) is 40 litres less than the quantity of milk in it. Find the quantity of water to be mixed so t...
A vessel contains 360 litres of milk and water in the ratio of 7:5. If 15 litres of milk is added to the mixture, then find the ratio of milk to water i...
In a mixture, milk and water are in the ratio 2:3. When 10 litres of milk and 6 litres of water are added, the ratio becomes 4:5. Find the initial quant...
Initially, 40% of mixture βPβ, consisting of petrol and diesel, is transferred into mixture βQβ, which has a petrol to diesel ratio of 5:4. Afte...
350 litres of mixture βAβ contains milk and water in it. If mixture βAβ is mixed with 700 litres of mixture βBβ which contains water and sa...