Question

Find three no. in airthmetic progressive whose sum in 15 and present is 80 .​

Answer 1

Step-by-step explanation:

Let the numbers be (a-d), an and (a+d). At that point, (a-d) +a+ (a+d) = 15 ⇒ 3a = 15 ⇒ a = 5 (a-d)*a*(a+d) = 80 ⇒ (5-d)*5 * (5+d) = 80 ⇒ (25-d2) = 16 = d2 =9 ⇒ d = 3 Numbers are 2, 5, 8 or 8, 5, 2.