Question

Answer 36. Lara has the following scores: 25, 45, 50 and 36. There is one more test and Lara wants his average to increase by 4, what does he have to score in her next test?​

Answer 1

The current average is: (25+45+50+36)/4
=39
Lara wants to increase her average by 4
So her average should be 43.

(25+45+50+36+x)/5=43
(156+x)/5=43
156+x=215
x=59

Lara has to score 59 in her next test to increase her average by 4