Question

sum of 3 consecutive multiples of 7 is 777 find these multiples

Answer 1

the answer is as 700, 70,7

Answer 2

sol.

  sum of three consecutive number is 777

     let the consecutive number be 7n , (7n+7), (7n+14)

⇒(7n)(7n+7)(7n+14)=777

⇒21n+21=777

⇒21n=777-21

⇒21n= 756

⇒n=756÷21

⇒n=36

therefore the multiples of 7 are (7×36)(7×36+7)(7×36+14)

⇒252,259,266