The equation that best represents "a number increased by five equals 15 " is
(A) $n-5=15$
(D) $n+15=5$
(B) $n \div 5=15$
(E) $n \times 5=15$
(C) $n+5=15$
If the number is $n$, then "a number increased by five" is best represented by the expression $n+5$. The equation that best represents "a number increased by five equals 15 " is $n+5=15$.

ANSWER: $(\mathrm{C})$