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
25 were vanilla
500 divided by 100 is 5 meaning that one percent is 5 and 5x5 is 25
1/4 is the answer is is a lower fraction
Its B I think maybe if it’s wrong am sorry