Question

If you have the following data about a jar of jellybeans, about how many jellybeans are estimated to be in the jar?

Mass of Jellybeans + Jar = 1642 grams
Mass of 20 Jellybeans = 7.94 grams
Mass of Jar ONLY = 495 grams Approximately, how many jellybeans are in the jar? ​

Answer 1

mass of jellybeans + jar = 1642 g

mass of jar = 495 g

mass of jellybeans alone = 1642 - 495 = 1147g

mass of 20 jellybean= 7.94 g

mass of 1 jellybean= 7.94 ÷ 20 = 0.397 g

total number of jelly beans = 1147 ÷ 0.397 = 2889

There are approximately 2889 jellybeans in jar

Answer 2

First, we need to calculate the mass of jellybeans alone.

Mass of Jellybeans + Jar = 1642 grams

Mass of Jar ONLY = 495 grams

Mass of Jellybeans = Mass of Jellybeans + Jar - Mass of Jar ONLY

Mass of Jellybeans = 1642 g - 495 g

Mass of Jellybeans = 1147 g

Next, we need to find the mass of one jellybean.

Mass of 20 Jellybeans = 7.94 grams

Mass of 1 Jellybean = Mass of 20 Jellybeans ÷ 20

Mass of 1 Jellybean = 0.397 g

Finally, we can estimate the number of jellybeans in the jar by dividing the total mass of jellybeans by the mass of one jellybean.

Number of Jellybeans = Mass of Jellybeans ÷ Mass of 1 Jellybean

Number of Jellybeans = 1147 g ÷ 0.397 g

Number of Jellybeans ≈ 2891

Therefore, there are approximately 2891 jellybeans in the jar.