Question

16. The teacher has a bag of blue candies and a bag of red candies with an equal number of candies in each bag. Students have 2 options to choose candies as follow:

Option 1: 2 blue candies - 2 red candies Option 2: 1 blue candy - 3 red candies After the students in the class have chosen, the teacher only has 20 blue candies left. How many students have selected option 2?​

Answer 1

10

Explanation:

Each time someone chooses Option 2, they take 2 more red candies than blue candies.

This means they leave 2 blue candies in the jar each time.

So, the answer is 20/2 = 10.