Question

If three times the larger of two numbers is divided by the smaller, we get 4 as the quotient and 8 as the remainder. If five times the smaller is divided by the larger, we get 3 as the quotient and 5 as the remainder. Find the numbers.

Answer 1

We know:
Dividend = Divisor × Quotient + Remainder
Let the larger number be x and the smaller be y.

Then, we have:
3x = y × 4 + 8 or 3x – 4y = 8                           ……….(i)
5y = x × 3 + 5 or –3x +5y = 5                         ………(ii)
On adding (i) and (ii), we get:
y = (8 + 5) = 13
On substituting y = 13 in (i) we get
3x - 4 × 13 = 8
⇒ 3x = (8 + 52) = 60
⇒ x = 20
Hence, the larger number is 20 and the smaller number is 13.