Question

If $653xy$ is exactly divisible by $80$, then the find the value of $(x+y)$.

• A. $2$
• B. $3$
• C. $4$
• D. $6$

Answer 1

Answer: (D)

$6$

Since $653xy$ is completely divisible by $80,y$ will be equal to $0$

Now to find $x$, we will divide the number by $8$, with the condition that the remainder is $0$

On division, we get $x=6,$ as $\frac{6536}{8}=817$

$\therefore x+y=6+0=6$.