Question

Larissa has a completely filled jar of jam that contains
of jam. She has three other jars with the same size. Of those jars,

1 jar is 2/3

filled with jam,
1 jar is 1/2

filled with jam, and
1 jar is 3/4

filled with jam.
Which of the following is the most reasonable estimate for the amount of jam that is in all 4 jars?

Responses
A 60 oz
B 80 oz
C 120 oz
D 160 oz

Answer 1

C 120 oz

To calculate the estimate for the total amount of jam, we can add the percentages of jam filled in each jar and take an average.

100% (completely filled) + 2/3 + 1/2 + 3/4 = 24/12 + 8/12 + 6/12 + 9/12 = 47/12 = 3.91

Assuming each jar is the same size, the estimate for the total amount of jam in all 4 jars would be 3.91 * 32 oz (completely filled jar) = 124.32 oz, which is closest to 120 oz.