A matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying
That's easy but I'll give the answer is 600
Your answer is about 25. A
80x20=1600 costumes
12x90=1080 masks
1600-1080=520
they ordered 520 more costumes than masks. hope this helps!
51-34 gives us QR=17
Needs to have same relation as the known side 17/34=.5
So
14*2=28
To check
14/28=.5
It worked so PT=28
