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- Important Formulas

The price of a commodity rises from ₹6 per kg to ₹7.50 per kg. Let if the expenditure cannot increase, the percentage of reduction in consumption is

- 20%
- 30%
- 15%
- 25%

### Answer is a

2. A exceeds B by 40%, B is less than C by 20%, then A:C is

- 26:25
- 3:1
- 28:25
- 3:2

### Answer is c

3. The ratio of the number of boys to that of girls in a school is 4: 1. Let 75% of boys and 70% of the girls are scholarship holders. Then the percentage of students who do not get a scholarship is

- 28%
- 26%
- 50%
- 75%

### Answer is b

4. The expenses on rice, fish, and oil of a family are in the ratio 12: 17: 3. If the price of these articles are increased by 20%, 30% and 50% respectively. Then Find the total expenses of the family on these articles is increased by

- 57/8%
- 225/8%
- 113/8%
- 449/8%

### Answer is b

5. The ratio of two numbers is 4:5 when the first is increased by 20% and the second is decreased by 20%, the ratio of the resulting numbers is

- 5:4
- 6:5
- 4:5
- 5:6

### Answer is **b**

Read More: Percentage Concepts