Answer:
the answer is 15
y=15. 5 is one-fourth,10 is two-fourths, and 15 is three-fourths of 20.
PREMISES
y=3/4(20)
CALCULATIONS
y=3/4(20)
y=(3×20)/4
y=60/4
y=
15
PROOF
If y=15, then the inverse of the expression 3/4(20) brings
y/20=3/4
15/20=3/4 and
3/4=3/4 establishes the solution y=15 to the expression 3/4(20)
or
3/4 of 20
3/4 x 20 = 15
