The cost of 1 melon is $\$ 3$. What is the cost of 6 melons?
(A) $\$ 12$
(B) $\$ 15$
(C) $\$ 18$
(D) $\$ 21$
(E) $\$ 24$
Since the cost of 1 melon is $\$ 3$, then the cost of 6 melons is $6 \times \$ 3=\$ 18$.

ANSWER: (C)