Answer:
625
Step-by-step explanation:
<u>here we are in an inverse proportion situation :</u>
<em>As the number of days increases </em>
<em>when the number of students decreases and vice versa.</em>
__________________
Say n is the original number of students.
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<u>After 15 days, the rest of food is enough for n students for 45 days, </u>
<u>or enough for n+500 students for 25 days.</u>
Then
45n = 25×(n + 500)
Then
45n = 25n + 25×500
Then
45n - 25n = 25×500
Then
20n = 12500
Then
n = 12500÷20
= 625
and thus , there were 625 students in the hostel.
Answer:
13-n=4
Subtract both sides by 13
-n=-9
n=9
Step-by-step explanation:
13 less means - and a number means n that you don’t know. is means = sign. And so we get the answer that I gave you. Thank you
93/4
9/4=2r1
13/4=4r1
10/4=2r2
20/5=4
=23.25
The answer is 18 stencils.
Ratio of stencils to colored pencils is 4:6
stencils : colored pencils
4 : 6
4 x 27 : 6 x 27
4/6 x 27 : 6/6 x 27
2/3 x 27 : 27
2 x 9 : 27
18: 27
Thus, when colored pencils are 27, stencils used are 18.