Question

The sum of three consecutive multiples of $7$ is $777$. Find these multiples.
(Hint: Three consecutive multiples of $7$ are '$x$','$x+7$', '$x+14$')

Answer 1

As given,the three consecutive multiples of 7 will be of the form:

$x,x+7$ and $x+14$

Then according to the question,

$x+x+7+x+14=777$

$3x+21=777$

$3x=756$

$x=\frac{756}{3}=252$

Multiples are $252,259,266$.