Answer:
42%
Step-by-step explanation:
[tex]\frac{21}{50}[/tex] as a percent
[tex]\frac{21}{50}=\frac{y}{100}[/tex]
50 · y = 21 · 100
50y = 2100
50y ÷ 50 = 2100 ÷ 50
y = 42
