To be able to determine the right answer to this item, we simply have to use the proper conversion factors and dimensional analysis.
First, we calculate for the total number of M&M that the 20 students can eat in 1 second considering that each student can eat 4.
n = (20 students)( 4 M&Ms / student )
n = 80 M&M
Then, we calculate for the mass of 80 M&M given that each weighs 63 g.
mass = (80 M&M)(63 g/ 1 M&M) = 5040 g of M&M
Next, we solve for the total mas of M&M that can be eaten in 3.75 hours considering that one hour is equivalent to 3600 seconds.
total mass = (5040 g M&M/s)(3600 s/1 h)(3.75)
total mass = 68040000 g of M&M
Converting this to kilogram by dividing it by 1000 will give us an answer of,
total mass = 68040 kg of M&M
