Solve the problem.
-A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 27 marbles in it. At least how many green marbles does it have?
A) At least 18 green marbles
B) At least 9 green marbles
C) At least 14 green marbles
D) At least 10 green marbles

Question

Quizplus · Accepted Answer

Let the number of green marbles be $G$ and the number of blue marbles be $2G$. The total number of marbles is at least 27, so $G + 2G = 3G \geq 27$. Solving for $G$, we find $G \geq 9$. Therefore, the bag has at least 9 green marbles.

Solve the Problem. -A Bag of Marbles Has Twice as Many Blue Marbles