Average of ten positive numbers  is x. If each number is increased by 12%  then x is increased by

A man loses 20% of his money. After spending 25% of the remainder, he has Rs.480 left with him. How much money did he originally have?

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

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.

If the income of Ram is $$ 12{1\over2}\%$$ more than that of Shyam, the income of Shyam is less than that of Ram by

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? 

A shopkeeper marks up the price of his product by 40%. If he increases the discount from 5% to 10%, the profit would decrease by Rs 14. How much profit would he earn if he gives a discount of 20% on the marked price?

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