At the beach cleanup, maya's group collected 14.8 pounds of trash on saturday and 12.5 pounds on sunday. will's group collected the same total amount of trash as maya's group but collected only 11.8 pounds on saturday.
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how much trash did will's group collect on sunday?
a.
3.0 pounds
b.
12.5 pounds
c.
15.5 pounds
d.
27.3 pounds

With #! i’ve tried to figure it out but i can’t.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.