Multiple choice

A and B have monthly incomes in the ratio 6 : 5 and their monthly expenditures in the ratio 4 : 3. If they save Rs. 1600 and Rs. 1800 respectively per month, then the monthly income of B is : A तथा B की मासिक आय 6 : 5 के अनुपात में है और उनका मासिक खर्च 4 : 3 के अनुपात में है। तदनुसार, यदि वे प्रतिमाह क्रमशः 1600 रू. तथा 1800 रू. की बचत कर लेते हों, तो B की मासिक आय है :

  1. Rs./रु.7200

  2. Rs./रु.5800

  3. Rs./रु.6400

  4. Rs./रु.6000
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let incomes be 6x and 5x, expenditures be 4y and 3y. Savings: 6x-4y=1600 and 5x-3y=1800. Solving gives x=1200, y=1400. B's income = 5x = 5×1200 = Rs.6000.

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