Rachel was an 85 average after four test. what does she need to earn on the next test if she wants to raise her average to exact

Question

3 years ago

13

ly 88?

1 answer:

irakobra [83] · Answer 1 · 2022-04-06T20:05:43+03:00

she took four tests with one more to take totals 5 tests

88 x 5 = 440

all her tests need to equal at least 440 to get an 88 average

since she has 85 average after 4, 85*4 = 340, so her 4 tests so far have equaled 340

440-340 = 100

she will need to get a 100 on her 5th test to have an 88 average