To get a b in math, alexandria pappas must average 80 on five tests. scores on the first four tests were 8282, , 8181, and 7474. what is the lowest score that she can get on the last test and still get a b?

The scores of Alexandria are 82, 77, 81, 74 and x, the score of the last test.

the average of these 5 is ,

to get a b, the average must be at least 80.

So, 



314+x=400

x=400-314 = 86

Thus, to get a B, Alexandria must score at least 86 on her last test.

86