1) Mira’s expenditure and savings are in the ratio 3 : 2. Her income increases by 10%. Her expenditure also increases by 12%. By how much per cent do her savings increase ?

2) A bottle is full of dettol. One-third of it is taken out and then an equal amount of water is poured into the bottle to fill it. This operationis done four times. Find the final ratio of dettol and water in the bottle?

3) Railway fares of 1st, 2nd and 3rd classes between two stations we are in the ratio of 8 : 6 : 3. The fares of 1st and 2nd class were subsequently reduced by 1/6 and 1/12 respectively. If during a year, the ratio between the passengers of 1st, 2nd and 3rd classes was 9 : 12 : 26 and total amount collected by the sale of tickets was Rs 1088, then find the collection from the passengers of 1st class?

4) The monthly incomes of two persons are in the ratio of 4 : 5 and their monthly expenditures are in the ratio of 7 : 9. If each saves Rs 50 a month, then what are their monthly incomes ?

5) M The total emoluments of A and B are
equal. However, A gets 65% of his basic salary as allowances and B gets 80% of his basic salary as allowances. What is the ratio of the basic salaries of A and B ?

6) The ratio between the number of passengers travelling by I and II classes between the two railway stations is 1 : 50, whereas the ratio of I and II classes fares between the same stations is 3 : 1. If on a particular day, Rs 1325 were collected from the passengers travelling between these stations, then what was the amount collected from the II class passengers ?

7) A vessel contains liquid P and Q in the ratio
5 : 3. If 16 L of the mixture are removed and the same quantity of liquid Q is added the ratio become 3 : 5. What quantity does the vessel hold ?

8) Given that 24 carat gold is pure gold, 18
carat gold is 3/ 4 gold and 20 carat gold is 5/6 gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is?

9) At Narmada Sarovar Bachao (NSB; demonstration, supporters of Ms Patkar outnumbered the police by 9 : 1. The police arrested 135 NSB supporters averaging 5 for even 3 policemen. How many supporters of NSB were there in the demonstration ?

10) A bag contains Rs 216 in the form of one rupee, 50 paise and 25 paise coins in the ratio of 2 : 3 : 4. The number of 50 paise coins is?