Question
If the radius of a sphere is doubled, then the volume of
the sphere becomes _____ times the previous volume.Solution
ATQ, Formula for volume of a sphere:
Original volume (radius = r):
New radius = 2r, new volume:
The volume becomes 8 times the previous volume.
A 270 litres mixture of mango juice and lemon juice contains mango juice and lemon juice in the ratio of 7:2. How much lemon juice should be added to th...
A merchant mixes 9 kg of beans at Rs. 7 per kg with 6 kg at Rs. 5 per kg. What is the cost price (in Rs.) of the mixture per kg?Β
150 litres of mixture βAβ has 90 litres milk and rest water. Find the total quantity of mixture βBβ if it contains 20% more milk and 20% less wa...
From a cask filled with wine, 108.75 liters are first drawn and replaced with water. From this mixture 87 liters are drawn and replaced with water. The ...
A 360-liter mixture consists of milk and water in a 5:4 ratio. If 7.5% of the mixture is removed and replaced with the same amount of water, what is the...
A container contains 600 lit of pure milk and P liters of water. Ratio of 25% of mixture to the initial quantity of water is 3 : 4 and when Q liters of ...
There is 135 litres of mixture of milk and water in a jar. The ratio of quantity of milk to water in the jar is 4:3, respectively. If βxβ litres of ...
In a tank, milk and water are mixed in the ratio 5:2. After removing 35 litres of this mixture, 6 litres of water are added. If the resulting mixture ha...
Quantity of water in a 300 litres mixture (alcohol + water) is 40 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed...
A 30-litre mixture consists of milk and water in the ratio of 5:7. To this mixture, 2.5 litres of milk and 4.5 litres of water are added. How much more ...