Question 384717
Given  a = 30% of b

i.e  a= 30 * b / 100


=> a/b =  30/100


=> a/4b = 30/4*100   (dividing both side by 4)


=> a/4b  = 30 / 400 =  3 /40   




so, a/4b = 3/40 =  0.075