Math problem?
On his first three tests, Tyler scored 85, 90, and 97. What score must he get on his fourth test to have an average (mean) of 80 for all four tests?
On his first three tests, Tyler scored 85, 90, and 97. What score must he get on his fourth test to have an average (mean) of 80 for all four tests?
Krishnamurthy
On his first three tests, Tyler scored 85, 90, and 97.
What score must he get on his fourth test
to have an average (mean) of 80 for all four tests?
320 - 272 = 48
?
A score that will make all 4 add up to 4(80)
Como
( 85 + 90 + 97 + x ) / 4 = 80
272 + x = 320
x = 48
Would have to score 48