Answer:
28
Step-by-step explanation:
40% 6th graders of 70 total = 28 6th graders
40% 6th graders + 20% 7th graders = 60%
100% - 60% = 40% 8th graders
40% are 8th graders therefore the answer is 28
Answer:2,2
Step-by-step explanation:
I remember doing this last year
Answer:
The Hardcover costs: $19.95 and the Paperback is: $6.65.
Step-by-step explanation:
6.65 * 3 = 19.95
19.95 + 6.65 = 26.60