Increase and Decrease Percentage

Q.

A 70 L mixture of juice and water contains 10% of water. How much water must be added to make the water content 12.5% of the resulting mixture?

1. 1 L

2. 3 L

3. 2 L

4. 4 L

Q. The number of students in a primary school increases by 20% every year. If the number of students in the previous year was 700, then what will be the number of students in the present year ?

1. 600
2. 840
3. 960
4. 720

Q. The prices of all the televisions in a shop are to be increased by $8\%$. Calculate the new price of a television that originally costs ₹ 9000.

1. Rs.169

2. Rs.162

3. Rs.152
4. Rs.160

Q. If the sales of the company decreases by 20% in the current year and reduces to 7200, then what was the sales of the company in the previous year?

1. 5400
2. 9000
3. 12000
4. 6000

Q. Ravi has purchased a vehicle at ₹ 60, 000. He sold it at a price $30\%$ less than its value to Amit. Amit spent $5\%$ of the amount he purchased in repairs. Find the percentage decrease of the price of the vehicle, including the repair price also.

1. 
2. 
3. 
4. 

Q.

What is 40% of 30% of 1000?

1. 120

2. 700

3. 300

4. 100

Q. The number obtained after increasing 100 by 30% is 130.

1. False
2. True

Q. The price of food items increased by 20% due to inflation. If the original price of food items were ₹350, then the increased price of the food items is ₹______.

1. 420

Q.

The number obtained after increasing $200$ by $20$% is ____.

1. 240

2. 222

3. 220

4. 210

Q. A number is increased by $10\%$ and then reduced by $10\%$. What is the effective increase or decrease in the original number?

1. Doesn’t change
2. Decreases by $1\%$
3. Increases by $1\%$
4. Increases by 2%