Pulse is now being sold at Rs. 20 a kg. During last month its rate was Rs. 16 per kg. By how much percent should a family reduce its consumption so as to keep the expenditure fixed?

If X beakers of 100 ml containing 1 : 4 acid-water solution are mixed with Y beakers of 200 ml containing 3:17 acid-water solution then the ratio of acid to water in the resulting mixture becomes 19:91 Find X : Y . 

A, B and C enter into partnership. A advances Rs. 1200 for 4 months, B Rs. 1400 for 8 months and C Rs. 1000 for 10 months. They gain Rs. 585 altogether. Find the share of each.

20 buckets of water fill a tank when the capacity of each bucket is 14.5 litres. How many buckets will be required to fill the same tank if the capacity of each bucket is 10 litres?

An oil refinery buys oil at Rs 3600 per barrel. There is 10 % wastage. If the refinery wants to earn 5% profit then at what price should it sell including 8 % tax on selling price? (in Rs per barrel) 

A person gives 1/4  of his property to his daughter, 1/2  to his sons and 1/5 for charity. How much has he given away?

Rs. 425 is divided among 4 men, 5 women and 6 boys such that the share of a man , a woman and a boy may be ratio of 9:8:4. What is the share of a woman?