1. The ratio of the numbers of male and female workers in a farm having 320 workers is 9 : 11. What will be the new ratio if 8 female workers leave the work?

2. Rs. 3900 is divided into three parts A, B, C. How much A is more than C if their Ratio is \(\frac{1}{2}:\frac{1}{3}:\frac{1}{4}\)

3. A virus inside a human organ can triple itself at every second. Then the ratio of the number of viruses at 31 seconds and 33 seconds is

4. If x : y = 5 : 1, then (4x2 – 22xy + 10y2) is equal to

5. If Gaganjyot's salary is 7/6 times of Hafiz's and Sayed's is 8/7 times of Hafiz's, what is the ratio of Gaganjyot's salary to Sayed's.

6. Two vessels of equal volume contain milk and water in the ratio 1 : 3 and 2 : 1. If they are mixed together, what is the new ratio?

7. Two numbers are in the ratio 5 : 6. When 6 is added to each, the ratio becomes 7 : 8 then the numbers are

8. Fresh fruit contains 75% water and dry fruit contains 20% water. How much dry fruit can be obtained from 300 kg of fresh fruits?

9. A man divides his property so that his son’s share to his wife’s and wife’s share to his daughter’s are both as in the ratio 3: 1. If the daughter gets Rs. 10,000 less than son, the value (in rupees) of the whole property is

10. The population of a town is 10,000. If the males increases by 5% and the females by 6%, the population will be 10540. How much females are there?

11. Tiger is chasing a Zebra. The distance covered by Tiger in 9 leaps is equal to the distance covered by Zebra in 7 leaps. If in the same interval of time Tiger leaps 6 times while Zebra leaps 4 times. The ratio of speed of Tiger and Zebra is

12. Some money is divided among A, B and c in such a way that 7 times A’s share, 9 times B’s share and 11 times C’s share are all equal. The ratio between the shares of A, B, C is

13. If \(\frac{2}{3}\ {\rm{of\ A}} = 30{\rm{\%\ of\ B}} = 0.5\ {\rm{of\ C}}.\) Then A : B : C is ?

14. In an alloy, the ratio of tin and lead is 4 : 3. If 2.250 kg of lead is mixed in 16 kg 100 gm of alloy, then the ratio of tin and lead will be

15. A bag has Rs12.9 in the form of 1 rupee, 50 paise and 10 paise coins in the ratio of 3 : 2 : 3. How many 50 paise coins are there in the bag?

16. 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

17. The railway fares of air conditioned sleeper and ordinary sleeper class are in the ratio 4 : 1. The number of passengers travelled by air conditioned sleeper and ordinary sleeper classes were in the ratio 3 : 25. If the total collection was Rs. 37,000, how much did air conditioner sleeper passengers pay?