Please help me!!
Amy has 18 marbles. Four of her marbles are red and the rest are black.
What is the ratio of the number of black marbles to the number of red marbles?
Explanation: there are 18 marbles in all and 4 of them are red so we gotta find how many are black so we would do 18-4 and that’s the number of black marbles and it’s asking for the ration so