Sarah's scores in her tests are as follows: 89, 94, 90, 90. What will be her grade in her next test if she wants to have an average of 92?

3 answers

89+94+90+90 = 363

92 x 5 = 460

460 - 363 = 97

She needs a grade of 97 in her next test.

PROVE:

89+94+90+90+97 = 460

460
-----
89+94+90+90 = 363

92 x 5 = 460

460 - 363 = 97

She needs a grade of 97 in her next test.

PROVE:

89+94+90+90+97 = 460

460
----- = 92 ! YAY!
5
Correct! Well done!
:)