Question

Abbas’s average on 4 tests is 45. What does he need on his 5th test to raise his average 50?

Answer 1

Answer: Given,

Average of 4 test= 45

Average of 5 test=50

Step-by-step explanation:Now,

Average of 4 test= Marks of tests/Number of tests

45= Marks of 4 test/4                              

Marks of 4 test =180

Now,

Average of 5 test=Mark of 4 test+ Marks of 5 test/Number of tests

50= 180+ Marks of 5 test/5

Marks of 5 test = 20