Question

the sum of three consecutive multiples of 7 is 777. These multiples

Answer 1

Let the consecutive multiples of 7 be 7n, (7n + 7) and (7n + 14). Therefore, multiples of 7 whose sum is 777 are (7 x 36), (7 x 36) + 7 and (7 x 36) + 14.That is 252, 259 and 266.

Answer 2

Let the first no =x
Second =x+7
Third =x+14

According to question
x+x+7+x+ 14=777
3x+21=777
3x=777-21
3x=756
x=756/3=252
So the nos will be

First = 252
Second =252+7=259
Third=252+14=266