Question 512592
#1)
a=1/3b+3
a-3=1/3b
b=(a-3)/(1/3)
b=(a-3)(3/1)
b=3(a-3)
-------------
#2)
10*18=x*15
180=15x
x=180/15
x=12hrs total
-----------------
12*2/3=24/3=8 hrs