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Ratio & Proportion

Crack the code of ratios & proportions! Learn their applications and see how they shape the world of math.

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Asked: 2 years agoIn: Ratio & Proportion

In a school there were 660 students and the ratio of the number of boys and girls was 13 : 9. After a few days 30 girls joined the school but a few boys left. As a result, the ratio of the boys and girls became 6 : 5. Determine the number of boys who left the school.

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a) b) c) d) correct answer is: d) Explanation Here,In a school, the number of students is And, the ratio of the number of boys and girls was Let,Number of boys is Number ...

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Asked: 2 years agoIn: Ratio & Proportion

A man cultivated brinjal and potato in the ratio 4 : 3 in his 35 katha land. He made a profit of ₹ 150 per katha for brinjal and ₹ 125 per katha for potato. Calculate the ratio of profit of that man from his cultivation of brinjal and potato from his total land.

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a) b) c) d) correct answer is: c) Explanation Here,The given ratio is And, total cultivated land is katha.Let,The man cultivated brinjal in katha.And, he cultivated potato in katha.According to ...

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Science Sparkle
Asked: 2 years agoIn: Ratio & Proportion

The ratio of story books and other books in a club-library is 4 : 3 and the number of story books is 1248. Some story books are purchased and thus the ratio becomes 11 : 6. How many story books are purchased?

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a) story books b) story books c) story books d) story books correct answer is: a) story books Explanation Here,The ratio of story books and other books is And, the number of story ...

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Answer
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Science Sparkle
Asked: 2 years agoIn: Ratio & Proportion

At the time of retirement a man got ₹ 196150. He donated ₹ 20000 for school library and the remaining amount was divided among his wife, son and daughter in the ratio 5 : 4 : 4. How much money did he give to each of them?

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a) ₹ 68750, ₹ 54600 & ₹ 54600 b) ₹ 67750, ₹ 54200 & ₹ 54200 c) ₹ 67250, ₹ 54100 & ₹ 54100 d) ₹ 60750, ₹ 54200 & ₹ 54200 correct answer is: b) ₹ ...

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Asked: 2 years agoIn: Ratio & Proportion

A co-operative agriculture farm grows paddy and jute in its 35 bighas of land in the ratio of 4 : 3. It earns as profit ₹ 2500 per bigha from paddy and ₹ 2800 per bigha from jute. What is the ratio of profit from paddy and jute?

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a) b) c) d) correct answer is: d) Explanation Here,Land ratio is And, Total land is bighas.Let,Paddy grew in bighas.Jute grew in bighas.According to the question, bighasSo that,Paddy grew in ...

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Asked: 2 years agoIn: Ratio & Proportion

The sum of the three angles of the triangle ABC is 180°. The ratio of ∠BAC, ∠ABC and ∠ACB is 3 : 5 : 10. If the value of ∠BAC is decreased by 10° and the value of ∠ABC is increased by 10°, calculate the new ratio of the three angles.

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a) b) c) d) correct answer is: d) Explanation According to the question,The ratio of and is Let,So,So, or or or or or or Now, ...

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Science Sparkle
Asked: 2 years agoIn: Ratio & Proportion

Ratio of the prices of two houses is 4 : 3 and the price of the second house is ₹ 420000. What would be the ratio of their prices if the price of the first house would have been ₹ 70000 more?

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a) b) c) d) correct answer is: b) Explanation According to the question,Ratio of the prices of two houses is And the price of the second house is Let,First house price is So,So ...

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Asked: 2 years agoIn: Ratio & Proportion

₹ 9000 is divided among three friends in such way that, the second friend gets twice the amount the first friend gets and the third friend gets half the sum of money two friends get. How much amount of money each friend will get?

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a) b) c) d) correct answer is: a) Explanation Let,First friend gets Second friend gets or And, third friend gets or According to the question, [cross multiply]So that,First friend gets ...

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Asked: 2 years agoIn: Ratio & Proportion

A customer co-operative society distributes ₹ 42150 as dividend among the members from the money it can spend in a year. The remaining money is distributes as salary of staff and loan among the people in the ratio 7 : 18. If the society can spend ₹ 77575 in a year, how much money it can invest as loan?

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a) b) c) d) correct answer is: a) Explanation According to the question,The co-operative society can spend in a year.It distributes as dividend among the members.So that,Remaining money Here,Remaining money is ...

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Asked: 2 years agoIn: Ratio & Proportion

For constructing a road in the village the ratio of the money spent for last four years is 2 : 4 : 3 : 2. If the total money spent those four years is 132 lac, then find how much money was spend on the second year and total money spent on first and third year?

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a) Rs lac and lac b) Rs lac and lac c) Rs lac and lac d) Rs lac and lac correct answer is: c) Rs lac and ...

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