Aisle I believe the answer, D , is correct. Although there still seems to have a problem.
We get from the description that the company has payed 28k in total, and we have the breakdown of the total which is composed of:
1. The base price P.
2. The maintenance fee, which is m% of P, so (m/100 * P).
3. The cloud-storage fee which is n% of the base price + maintenance fee, so n/100(P + m/100*P).
So to formulate this we get:
28,000 = P + m/100*P + n/100(P + m/100*P).From the
first statement we get that n = 40
So we can place this in to our formula and get:
28,000 = P + m/100*P + 40/100(P + m/100*P).
=> 28,000 = (P + m/100*P) (1+ 40/100)
=> 28,000 = (P + m/100*P)(140/100)
=> 20,000 = (P + m/100*P)
Now we can just plug in n = 40 again, and we get the dollar amount of the cloud-storage fee: 40/100*(20,000) = 8000.
From the
second statement we get: m=20 and the maintenance fee equals the cloud-storage fee.
So first we get a new formula:
20/100*P = n/100(P+20/100*P).
Also we can plug in m = 20 to our first formula:
28,000 = P + 20/100*P + n/100(P + 20/100*P). Plugging the new formula we got to our previous one gives us -> 28,000 = P + 20/100*P + 20/100*P
=> 28,000 = 140/100P
=> P = 20,000
so using the first formula once again, we get that
the cloud storage fee is -> 20/100* 20,000 = n/100(P +20/100*P)
n/100(P +20/100*P) =
4,000.The problem in the question is that although we can get a value from each of the statements, the values we get from the first statement and the second one do not match.
This is of course if I hadn't missed anything