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Nastasia [14]
3 years ago
14

> There are 14 books on a shelf. 6 of these books are new. The rest of them are used (a) What is the ratio of new books to us

ed books? (b) What is the ratio of used books to all books on the shelf ​

Mathematics
1 answer:
Trava [24]3 years ago
5 0

Answer:

a) 6:8

Because you have 14 books total if you substract 14 - 6= 8, so now you have

14 Books total

6 New Books

8 Used Books.

So, the ratio of new books to used books is 6:8 or if you simplified is 3:4.

b) 8:14

Because you have 8 used books compare to 14 books total. If you simplified your fraction you'll have 4:7

Step-by-step explanation:

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i need with this math problem. I am confused on how to do it. If you could help me it would be great. There are 2 parts to this
Novay_Z [31]
She took a total of 60 minutes
she answered both mulitiple choice and extended response in the total time which is 60 minutes
she took 2 minutes on rach multiple choice question and 6 minutes for the extended response
let x=number of multiple choice questions
let y=number of extended response questions
we can deduce that
total time =x*2+y*6
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also we can deduce
20=x+y
since 20 ia the sum of multiple choice and extended response
for part 2 we just solve the system of equations
60=2x+6y
20=x +y
lets multiply the second equation by 2 so we can get rid of x
60=2x+6y
40=2x+2y
subtracting the two equations from each other to yields
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y=5
to get x we substitute in one of the equations we derived from question 1
x+y=20
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