1. The ratio of 3 kg to 500 g is:
2. The ratio of 45 minutes to 1.5 hours is:
3. If 8 notebooks cost ₹40, what is the cost of 20 notebooks?
4. The numbers 12, 20, and 30 are in proportion. Which proportion is correct?
5. If a recipe needs sugar and flour in the ratio 2 : 5, how much flour is needed for 6 kg sugar?
6. The ratio of boys to girls in a class is 5 : 3. If there are 40 students, how many girls are there?
7. If 12 workers complete a job in 8 days, how many workers are needed to finish it in 6 days? (Assume inverse proportion)
8. A man earns ₹6000 in 8 days. How much will he earn in 20 days?
9. If the ratio of two numbers is 7 : 9 and their sum is 64, the smaller number is:
10. The ratio of the sides of a triangle is 5 : 6 : 7. If the perimeter is 180 cm, the longest side is:
11. A and B share money in the ratio 7 : 11. If B gets ₹550 more than A, what is the total amount?
12. A mixture contains milk and water in the ratio 5 : 2. If 21 liters of the mixture is taken out, how much milk is removed?
13. The ratio of the present ages of A and B is 5 : 8. After 6 years, the ratio becomes 7 : 10. What is B’s present age?
14. A recipe requires ingredients in the ratio 3 : 4 : 5. If the total weight of ingredients is 48 kg, what is the weight of the third ingredient?
15. A bag contains red, blue, and green balls in the ratio 2 : 3 : 5. If the total number of balls is 200, how many green balls are there?
16. The income of A, B, C is in the ratio 7 : 9 : 11. If C earns ₹4,000 more than A, what is B’s income?
17. Two numbers are in the ratio 9 : 14. If their difference is 25, what is the smaller number?
18. A mixture of 84 L contains milk and water in the ratio 3 : 4. How much milk must be added to make the ratio 1 : 1?
19. A, B, and C divide ₹18,000 in the ratio 3 : 2 : 1. How much more does A get than C?
20. Two numbers are in the ratio 7 : 12. If each number is increased by 15, the new ratio becomes 3 : 4. What is the larger original number?
