Answer:
9.52% ( to 2 dec. places )
Step-by-step explanation:
Calculate the percentage increase using
percent increase =
× 100%
increase = 46 - 42 = 4, hence
percent increase =
× 100% ≠ 9.52%
Rounded answer is 7.66
Regular answer is 7.65966
The answer is 84 because 21 times 4 equals 84