Question

I only need help with 12 & 13 only and show work please. note the picture is sideways​

Answer 1

12. 65:6 = 65/6 = 65 to 6

13: 21:4 = 21/4 = 21 to 4

Explanation:

You want the numerical values of the given ratios of blood donors written three ways.

In each case, replace the blood type with the corresponding number of donors. Ratios can be written using a colon, a division bar, or the word "to".

12. A+ and B+ to AB+

Using the numbers, this is ...

(45 +20) : 6 = 65 : 6 = 65/6 = 65 to 6

13. A- and B- to AB-

Using the numbers, this is ...

(21 +0) : 4 = 21 : 4 = 21/4 = 21 to 4