Respuesta :
Answer:
400
Step-by-step explanation:
40% of 7th grade is equal to 80
if 80 students from 7th grade makes up 20% then there's 400 students in the band.
Hey!
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~Turn into decimal
40% = 0.4
~Multiply
200 * 0.4 = 80 (7th graders in the band)
Now, we can write this as 80 is 20% of what number.
~Turn into decimal
20% = 0.2
~Divide
80 / 0.2 = 400
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Hence, there are [tex]\Large\boxed{\mathsf{400}}[/tex] students in band!
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Hope This Helped! Good Luck!