Question

Which ratio is not equivalent to 45/120 ?

A.3/8


B. 5/12


C.9/24


D.90/240

Answer 1

what do u think???

Answer 2

A its not correct

Answer 3

i think its C ?

Answer 4

9/24 =3/8

Answer 5

> Divide the percent by 100 to convert it to a decimal. For example, if you want to find 20 percent of 5/7, first divide 20 by 100 to get 0.2.
> Multiply the decimal by the numerator of the fraction. In this example, multiply 0.2 by 5 to get 1.
> Place the result from the previous step over the original denominator. In this example, you would place 1 over 7 to find that 1/7 equals 20 percent of 5/7. If you want to convert to a decimal, simply divide the numerator by the denominator. In this example, 5/7 equals 0.7143.
http://www.ehow.com/how_8119940_percent-fraction.html

Answer 6

How confident do you feel about reducing fractions? If you can reduce fractions, then this problem basically says: "reduce all the fractions you see, which one is equivalent to 45/120 (reduced)?"

Answer 7

Oh and next time, no direct answers.^^

Answer 8

D? I'm not good at reducing.

Answer 9

Do you know how to factor numbers?
Like, 45 -->

45 = 9*5
45 = 3*3*5
That's it. You can't factor it anymore.

And for 120 -->
120 = 2*60
120 = 2*2*30
120 = 2*2*2*15
120 = 2*2*2*3*5

Woooah. 45 and 120 have some factors in common -- 3 and 5.

\[
\huge
\dfrac{45}{120}=\frac{3*\color{red}{3*5}}{2*2*2*\color{red}{3*5}}
\]

Cancel the 3*5 in the numerator and denominator

\[
\huge
\dfrac{45}{120}=\frac{3}{2*2*2} = \frac{3}{8}
\]
Does that help?

Answer 10

Yeah. so it's A

Answer 11

Nope. The problem says:

> Which ratio is NOT equivalent to 45/120 ?

Answer 12

so what i have said but no one think about my answer

Answer 13

And we just showed that 45/120 is equal to 3/8 , so those fractions ARE equivalent.

Answer 14

So the problem is asking this:

"Reduce all the fractions. Which one does NOT reduce to 3/8?"

Answer 15

B?

Answer 16

yes B

Answer 17

Kay

Answer 18

Did you reduce all the other fractions? (B Is correct, but I want to make sure you understand why it is correct.)