Answer:
1542.5
Step-by-step explanation:
1542.5 can be in one group and the other 1542.5 can be in another group.
1542 1/2
I think the answer is -25
a is proportional to b
a=kb
k is proportionality constant
k =a/b =3/12 =1/4
k=1/4 = a/b=a/18
1/4=a/18
a=18/4 =9/2 =4.5 answer
