Question

Marcelo has 6 red marbles in his marble collection. The red marbles make up 12% of all the marbles. How many marbles are in Marcelo’s collection? Show your work.

Answer 1

If 6/? makes of 12/100, we need to divid 100 by two to figure out the denominator of six. This is because to go from 12 to six (the numerators), you divide by two, so you do it for the denominator as well. This would give 6/50, which means there are 6 red marbles out of 50 marbles in the collection.