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balu736 [363]
3 years ago
9

80% of the students in Lea’s class earned an A or a B on the weekly math test. If 20 students got an A or a B, how many students

are in Lea’s class?
Will give Brainliest!!

P.S. This is 6th Grade math on Edge 2020
Here are the options:
0 20 is 80% of what number?
0 20 × 4 = 80, so 100 × 4 = 400 students
0 20 + 60 = 80, so 100 + 60 = 160 students
0 80 ÷ 4 = 20, so 100 ÷ 4 = 25 students
0 80 – 60 = 20, so 100 – 60 = 40 students
Mathematics
2 answers:
frutty [35]3 years ago
5 0
A. 20 is 80 of what number
blondinia [14]3 years ago
5 0

Answer:

25

Step-by-step explanation:

80% got A orB  out of 100% so

20 students are 80% of the class

we need 20% to find all 100% so

80%/4=20% and 20/4=5 students represent 20%

100%= 80%+20% =20students+5students=25 students

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Nola was selling tickets at the high school dance. At the end of the evening she picked up the cash box and noticed a dollar lyi
Blizzard [7]

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The $1 belongs to the cash box

Step-by-step explanation:

Given

See attachment for complete question

Required

Determine if the $1 belongs to the cash box or not

Represent singles with s and couples with c.

From the attachment, we have:

s + c = 47 --- total attendance

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Solve for s and c.

Make s the subject in (1)

s = 47-c

Substitute 47 - c for s in (2)

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Open bracket

235 - 5c + 4c = 200

235 - c = 200

c = 235 - 200

c = 35

This means that the total individual which makes up the couples are 35. This is not possible because couples are in 2's and the total should be an even number.

<em>So, we can conclude that the $1 belongs to the cash box</em>

4 0
2 years ago
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D if you take 6/25 = 24/100 then change to a decimal and get 0.24
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