Question

Over the last three evenings, Lisa received a total of 139 phone calls at the call center. The second evening, she received 4 times as many calls as the third evening. The first evening, she received 7 more calls than the third evening. How many phone calls did she receive each evening?

Answer 1

Answer:

Let the third evening's call be = X

Second evenings call = 4 times as many calls as the third evening. => 4x

First evenings call = 7 more than third evening

7 + x

Total = 139

.= > x + 4x + 7 + x = 139

=> 6x + 7 = 139

= > 6x = 139 - 7

=> x = 132 / 6 = 22

Third evening = 22 calls

.First evening = 22 + 7 = 29 calls

Second evening = 22 *4 = 88 calls