Jyoti needs 85% average on her five maths tests. She scored 99%, 85%, 79% and 88% in her first four tests. What score must she earn on her fifth test in order to have an average of exactly 85% for all five tests?
A74%
B79%
C85%
D88%
Jyoti needs 85% average on her five maths tests. She scored 99%, 85%, 79% and 88% in her first four tests. What score must she earn on her fifth test in order to have an average of exactly 85% for all five tests?
A74%
B79%
C85%
D88%