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If x : y= 2 : 3, the value of x2+y2x2-y2 is:

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Important Questions on Ratio and Proportion

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The respective ratio between Pooja's, Prarthana's, and Falguni's monthly income is 53 : 70 : 57. If Prarthana's annual income is 4,20,000, what is the sum of Pooja's and Falguni's annual incomes? (In some cases monthly income and in some cases annual income is used)
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The respective ratio between Sita's, Riya's, and Kunal's monthly income is 84 : 76 : 89. If Riya's annual income is Rs. 4,56,000, what is the sum of Sita's and Kunal's annual incomes? (In some cases monthly income and in some cases annual income is used)
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In a garden, the ratio of the number of coconut trees to that of mango trees is 5 : 6, respectively. If the total number of trees is 121, then how many coconut trees are there in the garden?
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The ratio between the present ages of Vijay and Sanjay is 6 : 7. Three years hence the ratio will become 7 : 8 respectively. What is the present age of Vijay?
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The ratio of a number of students taking admission in organisation X and Y was 5 : 8. If 20% of students exceed in organisation X and 10% of students exceed in organisation Y, then new ratio of students is:
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The ratio of managers to management trainees is 3 : 5. When 21 new management trainees are recruited, the ratio will become 3 : 8. How many managers will there be in the group?
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If a sum of money is to be divided among A, B, and C such that A's share is equal to twice B's share is 4 times C's share, then their shares are in the ratio: