Question
Incomes of company A and company B are in the ratio of
3:7. Had the income of company A been more by Rs.20 lakh, the ratio of their incomes would have been 4:7. What is the income of company B?Solution
Let the incomes be 3x and 7x respectively.  According to the question, => (3x+20)/7x = 4/7 => 21x + 140 = 28x  => x = 20 Income of company B = 7x = 7 × 20 = Rs. 140 Lakh
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