algebra 1
posted by esther .
You are taking a Spanish course in which there will be four test. Each worth 100 point. You have scores of 99,97 and 92 on the first three test. You must make a total of 360 in order to get an a. What scores on the last test will give you an a?
I am really grateful for your help.

360999792=a

99 + 97 + 92 = 288
360  288 = ? 
you are taking a computer course in which there will be four tests, each worth 100 points. You have scores of 94,92, and 90 on the first three tests. You must make a total of 360 in order to get an A. What scores on the test will give you an A?