How many red marbles are in the jar?

Question

In an enormous jar of marbles, the ratio of red to green marbles is 13 to 5. If there are 600 green marbles, how many red marbles are in the jar?

Answer 1

The ratio of red to green is 13 : 5

There are 600 green marbles, so 5 units = 600 marbles.

Thus, 1 unit = 600 / 5 = 120 marbles

Since there are 13 units of red marbles, the number of red marbles is:

120 * 13
= 1560 marbles

Hence, there are 1560 red marbles in the jar.