Answer:
See below.
Step-by-step explanation:
Total = 110
Let calls on third evening = x
second evening = 4x
first evening = x + 8
=> x + 4x + x + 8 = 110
=> 6x = 102
=> x = 17
First evening = x = 17 calls
Second evening = 4x = 68 calls
Third evening = x + 8 = 25 calls
Your answer is 1 and 7/8.
8513 is NOT divisible by 9, because the some of its digits (8+5+1+3) = 17 which is not divisible by 9 (answer B)
