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Grace [21]
3 years ago
7

Seventy percent of the 100 students in middle school cafeteria bought their lunch sone of the students that brought there own lu

nch leave the cafeteria to attend a assembly now only 60% of the remaining students bought their lunch how many students are remaining in the cafeteria
Mathematics
1 answer:
gogolik [260]3 years ago
3 0
So we solve for each
70% of 100=70
students who didn't buy lunch=100-70=30

some of the 70 left so that the students who bought lunch, are 60% of those who are left
we know that the students who didn't buy lunch didn't change number so therefor
100% of students left-60%=40%= students that didn't buy lunch=30 so
40%=30
20%=15
100%=75
there were 75 students lfet in the cafeteria
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maria [59]
A, The temperature increase had increased the number of visitors.
4 0
3 years ago
If 120% is £48, what is 100%
azamat

Answer:

40

Step-by-step explanation:

If we go by 20's (20% of 100) 100% is 5. Since were dealing with 120% in our case we'll be dividing by 6 <u>to figure out what every 20% is</u>. All we need to do it's divide 48 by 6 and we get the answer 8. So in our case every 20% is equal to 8. now to solve for 100% all we need to do is subtract 8 (20%) from 120% (48) and we find 100% is 40. We could also do 8 x 5. (<em>remember every 1 is 20% in our case</em>) which is also 40. Therefore, your answer is 40.

If you don't quite understand what I'm talking about please let me know and I'll elaborate.. thanks! have a nice day and good luck with your quiz!

6 0
3 years ago
Can u help me -32=4c-12
zvonat [6]
-32 = 4c -12
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6 0
3 years ago
Read 2 more answers
3/5x + 2/5y + 1/8 - (3/5x + 1/5y + 1)
notka56 [123]
I just copied and pasted your question on google and a graph came up it may not be the answer but i tried...
4 0
3 years ago
Using the given table of an exponential function, determine the growth/decay factor as well as the rate of increase/decrease. Ty
Westkost [7]

Answer:

The growth rate is 0.6

The growth factor is 1.6

Step-by-step explanation:

Generally, the exponential equation can be written as;

y = a(1 + r)^x

Where a is the initial value of 100

r is the growth rate

So let us form equations;

160 = 100(1 + r)^1 •••••(i)

Also;

256 = 100(1 + r)^2 •••••••(ii)

Divide equation ii by i

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r = 1.6-1

r = 0.6

7 0
3 years ago
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