From a container having pure milk, 20% is replaced by water and the process is repeated thrice. At the end of the third …

In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is $$\frac{2}…

30% apples out of 450 are rotten, How many apples are in good condition ?

Two vessels contain equal quantities of 40% alcohol. Sachin changed the concentration of the first vessel to 50% by addi…

1% of 1% of 25% 1000 is:

In a class, the number of girls is 20% more than that of the boys. The strength of the class is 66. If 4 more girls are …

Nandini Basu bought an article for Rs. 5844. She gave Rs. 156 to a mechanic to remove its defect. She then sold it for R…

If X is 90% of Y, then what percent of X is Y ?