Finding Increase or Decrease Percentage in Situations

Q.

By what percent is ₹2, 000 less than ₹2, 400?
[1 mark]

1. 16.67%
2. 20%
3. 15%
4. 25%

Q.

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

1. 222

2. 220

3. 240

4. 210

Q.

If the present petrol price is ₹50, then what is the new price when:

i) there is an increase of 20% on the original price?

ii) there is a decrease of 10% on the original price?

1. ₹60, ₹45

2. ₹75, ₹80

3. ₹45, ₹60

4. ₹80, ₹75

Q.

If 20 is decrease by 50%, then we obtain 10.

1. True

2. False

Q.

A 10% hike in petrol price between yesterday and today means that a man who paid ₹ 200 for some petrol yesterday, will pay ₹ 220 for the same amount of petrol today.

1. True

2. False

Q.

The accommodation in an apartment costs ₹ 42 lakh. After 6 months, there was a 10% price hike, the new cost is:

1. 42, 20, 000

2. 46, 20, 000

3. 44, 20, 000

4. 44, 60, 000

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 Rs.150.

1. Rs.152
2. Rs.160
3. Rs.169

4. Rs.162

Q.

If only 10 of the 200 apples are bad, what percent is good?

1. 

2. 

3. 

4. 

Q.

In measuring the length and breadth of a rectangle, errors of $5\%$ and $3\%$ in excess, respectively, are made. The error percent in the calculated area is

1. $7.15\%$

2. $6.25\%$

3. $8.15\%$

4. $8.35\%$

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 2%
4. Increases by $1\%$