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Ratio & Proportion · Question 21 of 67

Question 21

HardOriginal question

The monthly incomes of Anjali and Bhavesh are in the ratio 5:45 : 4 and their monthly expenses are in the ratio 3:23 : 2. Each of them saves ₹8,000 a month. What is Anjali's monthly income?

Options for question 21

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. Let incomes be 5x and 4x, expenses 3y and 2y.

  2. Savings: 5x−3y=8,0005x - 3y = 8{,}000 and 4x−2y=8,0004x - 2y = 8{,}000.

  3. From the second, y=2x−4,000y = 2x - 4{,}000. Substituting: 5x−6x+12,000=8,0005x - 6x + 12{,}000 = 8{,}000, so x=4,000x = 4{,}000.

  4. Anjali's income = 5×4,0005 \times 4{,}000 = ₹20,000.

Worth noting

₹16,000 is Bhavesh's income and ₹12,000 is Anjali's expense (y=4,000y = 4{,}000, so 3y=12,0003y = 12{,}000).

Concept
Two ratios linked by equal savings
Typical time
100 s
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Ten questions from Ratio & Proportion, at your own pace.

Practise this chapter →

Ten questions from Ratio & Proportion, at your own pace.