Answer:
The answers A
Step-by-step explanation:
Use ratios such that x1/y1= x2/y2
Need to find x2
So it works much easier if you use x as the numerator, giving 15/12=x/21
Multiply both sides by 21 and we have 21 x 15/12=x x 21/21
and 21/21=1 giving: x=21 x 15/12= 26 1/4
and in decimal form is 26.25
