14. Finding 20% of 1,500 is really the same as finding [tex] \frac{1}{5} [/tex] of 1,500. But what you can is that, you can convert 20% into a decimal, and multiply that with 1,500. 20% converted into a decimal is 0.20.
0.20 × 1,500 = 300.
Mike saved 300$ from that paycheck.
----
15. This is a bit more easier, since 50 is a factor of 100. What I would do is just simply multiply 50 and 2 to get 100, and what you do to one number, you do the same to another. That would make it 80:100.
PERCENT : 80%
FRACTION : [tex] \frac{4}{5} [/tex]