Which of the following is NOT a correct ratio for 12 stars and 15 hearts?
a. 12 to 15
b. 4:5
c. 12/15
d. 3 to five
And your answer is?
d 3 to 5
Yes, you're right.
To determine which ratio is incorrect, we can simplify each ratio to see if it matches the original ratio of stars to hearts (12:15).
a. 12 to 15: This is the original ratio, so it is correct.
b. 4:5: To simplify this ratio, divide both 4 and 5 by their greatest common factor, which is 1. The simplified ratio is 4:5, which does not match the original ratio, so it is incorrect.
c. 12/15: To simplify this ratio, divide both 12 and 15 by their greatest common factor, which is 3. The simplified ratio is 4/5, which does not match the original ratio, so it is incorrect.
d. 3 to five: To compare this ratio to the original ratio, we need to convert "five" to a numerical value. Since it says "three to five," we can write it as 3:5. This ratio does not match the original ratio, so it is incorrect.
Therefore, the incorrect ratio is b. 4:5.