Question

the sum of three consecutive multiples of 7 is 777.find the number

Answer 1

Let reqd nos be x, x+7,x+14
Sum=777
x+x+7+x+14=777
3x+21=777
3x=756
x=252
So reqd nos are 252,259,266

Answer 2

Hii friend,

Let the consecutive multiple of 7 be 7X , 7X+14 , 7X+21

According to question,

7X + 7X +7 + 7X+14 = 777

21X + 21 = 777

21X = 777-21

21X => 756

X = 756/21 => 36

Therefore,

Numbers = 7X ,7X+14 , 7X+21 => 7 × 36 , 7 × 36 +7 , 7 × 36 + 14

=> 252 , 259 ,266

HOPE IT WILL HELP YOU.... :-)