Application of Ratio in Everyday Life

Q. Idli is prepared by mixing two cups of rice and one cup of urad. Then, the ratio of urad to that of the whole mixture is .

1. 1 : 3
2. 2 : 3
3. 3 : 1

Q. A sum of Rs160000 is divided in ratio of 3:5. What is smaller share?

Q.

Express $33\frac{1}{3}\%$ as a ratio in the lowest form.

Q.

Out of three positive numbers, the ratio of the first and the second is 10:11 and that of the second and third is 1:2 .
Find the three numbers if the product of the first and the second is 2750 .

1. 50

2. 55

3. 11

4. 110

Q. A society has an executive committee of 20 people. If the ratio of male and female in the society is 3 : 2, then, the no. of females in the committee is ________.

1. 8

Q. A carpenter had a board which measured 3 m by 2m. she cut out a rectangular piece of 250 cm by 90 cm.
The ratio of the area of cut out piece and the remaining piece ___ .

Q.

The ratio of the incomes of Rahul and Keshav is $5:4$. If Rahuls income is $₹18000$, what is the income of Keshav?

Q.

The length of a pencil is 10 cm and its radius is 2 cm. Find the ratio of its length to its diameter.

1. 1:5
2. 2:5
3. 5:2

4. 5:1

Q.

Divide ₹642 among A, B, C in the ratio 1:2:3. What will be C's share?

1. ₹300

2. ₹314

3. ₹321

4. ₹330

Q.

5 litres of water was mixed with 2 litres of lemon juice to make lemonade for a gathering. To make it tastier, if the quantity of lemon juice is tripled and that of water is doubled, find the new ratio between water and lemon juice.

1. 10:6

2. 6:10

3. 5:3

4. 3:5

Q.

A father wants to divide$₹7000$ between his two sons in the ratio of their ages. If the younger son is $7$years old and the elder one is $3$years older than the younger one, find the share of each.

Q.

To start a business, Raju invested ₹ 20000, Ravi invested ₹ 30000 and Surya invested ₹ 40000. They made a total profit of ₹ 450 and decided to divide it in the ratio of their investments. How much money did Ravi get?

1. ₹ 360

2. ₹ 270

3. ₹ 90

4. ₹ 180

Q.

In a collection of Rubber Balls, Tennis balls and Plastic balls, there are 25% more Rubber Balls than Tennis Balls, and there are 30% more Plastic balls than rubber balls. If C is the number of rubber balls what is the total no.. of balls?

a. 31/10C

b, 33/11C

c, 34/7C

d. 13/10C

Q.

A box contains 24 bulbs out of which 6 are defective. The ratio of good bulbs to defective bulbs is

1. 3:1

2. 1:3

3. 1:4

4. 4:1

Q.

There are $120$ students in a class. $45\%$ of the students like social studies while the rest of the class likes mathematics. Find the ratio of the number of students who like social studies to the number of students who like mathematics.

Q. In a classroom, the ratio of the number of boys to that of girls is 5:3. If the total number of students is 48, then find the number of girls in the class.

1. 12
2. 18
3. 30
4. 6

Q.

Find the ratio of 1 m and 2 m 25 cm.

1. 1: 5

2. 4: 9

3. 9: 4

4. 2: 5

Q. A wall is painted with green and red colour in the ratio of 1 : 4. What is the amount of green paint required if the total paint bought for painting the wall is 30 liters?

1. 6

Q.

Divide $₹3150$ among A, B and C so that the ratio between the As share and Bs share is $2:5$ and the ratio between the Bs share and Cs share is $4:7$

Q. A water park had dolphins and penguins in the ratio of 2:5. The park had 35 penguins. If the number of penguins is doubled and the number of dolphins is halved, then find the present ratio of the dolphins to penguins.

1. 2:5
2. 14:35
3. 1:10
4. 7:10

Q.

Mohit earns $₹2,50,000$ in a year. He saves $₹60,000$ and spends the rest. Find the ratio of his earnings to his saving.

Q. How can we organise the following items?

Red ball , Blue ball , Yellow ball , Black ball , Black ball , Red ball , Black ball , Blue ball , Blue ball , Yellow ball , Red ball , Red ball , Blue ball , Black ball.

1. Pronouning names
2. Organise by shape
3. Writing names
4. Organise by colour

Q.

Alex and Freddy collect stamps.

The number of stamps in Alex’s collection is in ratio $3:5$ to the number of stamps in Freddy’s collection.

If Freddy gives Alex $10$ stamps, the ratio will change to $7:9$. How many stamps are in both collections together?

Q. If half a metre of cloth costs ₹ 15. Find the cost of $\frac{81}{3}$ metres of the same cloth.

Q.

The price of the milk has increased in the ratio 1:5. What would be the price of the milk this year if last year, the price was ₹ 20 per litre.

1. ₹100 per litre

2. ₹ 80 per litre

3. ₹ 20 per litre

4. ₹ 4 per litre

Q.

In a school there are $420$ boys and $180$ girls. Find the ratio of

girls:boys

Q.

The ratio of the number of boys to the number of girls in a school is $12:8.$ If the number of boys in the school is $600,$ then the number of girls is

1. $200$

2. $400$

3. $600$

4. $800$

Q.

We have seen that to make idlis rice and urad must be in the ratio 2 : 1. If the total of rice and urad taken is 9 cups, how many cups of rice was taken? And how many cups of urad?

Q.

Mr. Vijay is 42 years old and his son is 14 years old. Determine the ratio of father's age to that of son's age when the son was 12 years old.

1. 28 : 12

2. 10 : 3

3. 12 : 40

4. 3 : 10

Q. You know that to make 20 pancakes you have to use 2 eggs. How many eggs are needed to make 100 pancakes?