Question

The Johnson twins were born nine years after their older sister. This year, the product of the three siblings" Ages is exactly 2378 more than the sum of their ages. How old are the twins?

Answer 1

ages of the twins are 11 years

Explanation:

let the age of the twins each be X

Age of the older sister = X+9

This current year;

(X)(X)(X+9) - (X+X+X+9) = 2378

X³+9X² - 3X-9 = 2378

Solving the polynomial

X = 11

Hence ages of the twins are 11 years