Three students came to the bake sale to shop. The sum of their ages is 33. The product of their ages is 1320. How old are they?

Answer 1

let the ages of three persons be a-d,a,a+d
then,
a-d+a+a+d=33
=>3a=33=>a=11
and,a(a-d)(a+d)=1320
=>11(121-d^2)=1320
=>d^2=1
=>d=1
therefore,the ages of the three persons are
11,10,12