Two numbers are such that the ratio between them is 4 : 7. If each is increased by 4, the ratio becomes 3 : 5. The larger number is
Choose the correct answer: A) 36 B) 46 C) 56 D) 64 E) None
Sol.   Let the numbers be 4x and 7x.   Then, 4x+4 / 7x+4 = 3/5   ⇔ 5(4x+4) = 3(7x+4)   ⇔ x = 8.   ∴ Larger number = 7x = 56.   Answer 56
<result>C</result>
Two numbers are such that the ratio between them is 4 : 7. If each is increased by 4, the ratio becomes 3 : 5. The larger number is