Answer:
3y
Step-by-step explanation:
40 new accounts for: 100 customer calls
10,000 new accounts for: x customer calls.
----------------------------------------------------------------
40 : 10,000 = 100 : x
x = (100 · 10,000 ) : 40 = 25,000
Answer: 25,000 customer calls were made.
It CAN'T equal 21, since 9+10=19
BUT, if the 9 was changed to like, 11 - Then it would = 21, or if the 10 was changed to a 12, it would make 21 also,
I think B is correct answer