In a village, each of the 60 % of families has a cow; each of the 30 % of families has a buffalo and each of the 15 % of families has both a cow and a buffalo. in all there are 96 families in the village. How many families do not have a cow or a buffalo? 

If a batsman scored 120 runs which included 9 boundaries and 3 sixes, then what percent of his total score did he make by running between the wickets?

The salary of a person is increased by 20%. By what % the new salary must be reduced to restore the original salary?

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

A man spend 15% of his income. If his expenditure is Rs.75, his income (in rupees) is:

If 35% of A’s income is equal to 25% of B’s income, then the ratio of A’s income to B’s income is

A basket contains 300 mangoes. 75 Mangoes were distributed among some student. Find the percentage of mangoes left in the basket.

If the present population of a village is 55,566, which was 35000 2 years ago, then find the rate of increase of population per year.