Answer:
Step-by-step explanation:
399*42%= 167.58 the mark up amount
399+167.50=566.50 total
Answer:
63
Step-by-step explanation:
Because, 100% of 70 would be 7. Now we have that number lets multiply it by 9 because of 90%. 9 x 7 = 63 first-graders
(Sorry I could only answer part A) The Answer is 84 -w-
