Problema Solution
There are twice as many sophomores as freshmen. There are 1/3 more juniors than freshmen. If there are s sophomores, how many juniors are there?
Answer provided by our tutors
s = the number of sophomores
f = the number of freshmen
s = 2f
f = (1/2)s is the number of freshmen
j = f + (1/3)f
j = f(1 + 1/3)
j = (2/3)f
plug f = (1/2)s into the last equation:
j = (2/3)*(1/2)s
j = (1/3)s
There are (1/3)s juniors.