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Bas_tet [7]
3 years ago
13

What is an equivalent ratio to 7:5A 14:12B 21:10C 21:15PLZ help me

Mathematics
2 answers:
svp [43]3 years ago
4 0
Look at all the options.

Let's look at the 5 in the ratio. A number of an answer choice has to be divisible by 5. We can already say A isn't the right answer, because we can't multiply 5 to 12. 

All the 7 factors are equal to 21.

7*3= 21

So, shouldn't we multiply by 3 for the 5 as well?

3*5= 15

The correct answer is 21:15 or "C".

I hope this helps! 
Paha777 [63]3 years ago
3 0
The correct answer is C, since 7:5*3 is 21:15.
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