Triangles ABC and A'B'C are similar. This means that the corresponding sides are in the same ratio, in this case:

Replacing with data:
<u>old:</u> $16
<u>new:</u> $20
<u>percent increase</u>
-> formula: (new-old / old) x 100
(20-16 / 16) x 100
4/16 x 100
0.25 x 100
answer: 25% increase
Answer: x = 3/80
Step-by-step explanation: