In a college Anjana scored 80 marks out of 150 in History and 95 marks out of 120 in English. If she wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

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 the price of petrol increases by 19% and Sunitha intends to spend only an additional 12 % on petrol, by what percent should she reduce the quantity of petrol purchased?

The price of sugar is increased by 20 %. If the expenditure on sugar has to be kept the same as earlier, the ratio between the reduction in consumption and the original consumption is: 

An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is  

498 is 17 % less than a number then the number is: 

The average score of 42 students in a test is 69. The ratio of the number of boys to that of girls is 10 : 11. The average score of the boys is 20% more than that of the girls. The average score of the boys is: