Over the last three evenings, Susan received a total of 95 phone calls at the call center. The first evening, she received 5 fewer calls than the third evening. The second evening, she received 3 times as many calls as the third evening. How many phone call did she receive each evening?
Let the number of calls in the 3rd evening=C
The number of calls in the first evening =C - 5
The number of calls in the 2nd evening =3C
C + C - 5 + 3C =95, solve for C
C = 20 calls in the 3rd eveningg
20 - 5 = 15 calls in the first evening
3 x 20 = 60 calls in the 2nd evening.
20 + 15 + 60 = 95 calls received in 3 evenings.