Answer:
b=17
Step-by-step explanation:
b=(45+6)/3
b=51/3
she bought 17 books since the original price of evereything was 51 dollars before the discount of 6 dollars.
consider the numbers are x,2x,3x,4x,5x
Given;
(x+2x+3x+4x+5x)/5 = 11
15x = 55
x= 55/15 = 11/3
The numbers are
11/3, 22/3, 11, 44/3, 55/3
