Subject
Quantitative Aptitude
Topic
Ratio
The ratio of daily incomes of P and Q is 9 : 7 and the ratio of their expenditures is 4: 3. If each saves 200 per day, then the sum of their daily incomes is :
The ratio of daily incomes of P and Q is 9 : 7 and the ratio of their expenditures is 4: 3. If each saves 200 per day, then the sum of their daily incomes is :
ক)
3,600খ)
4,200গ)
4,800ঘ)
5,600ঙ)
3,200Explanation
P : Q = 9 : 7 Daily income of P is 9x Daily income of Q is 7x Expenditure of P is 4y Expenditure of Q is 3y Now according to the problem, 9x – 4y = 200….(i) And 7x – 3y = 200……(ii) Multiplying equation (i) by 3 and multiplying equation (ii) by 4, 27x-12y = 600 28x-12y = 800 Subtracting the prior from the later, X = 200 Daily income of P = 9x = 1800 Daily income of Q = 7x = 1400 Total daily income = 1800 + 1400 = 3200Related questions
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