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3 years ago

NEED ASAP!!!! BRANELIEST IF ANSWERED CORRECTLY WITH SHOWN WORK.

Mathematics

1 answer:

S_A_V [24]3 years ago

4 0

Answer: at new cost increase is 30%

after additional $4.50 fee increase would be 45%

Step-by-step explanation:

use equation

30:100=39:x

30x=3900

x=3900/30

x=130

130-100=30%

39+4.50=43.5

30:100=43.5:x

30x=4350

x=4350/30

x=145

145-100=45%

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