Question

Ravi obtained 70 and 75 marks in first two unit tests. find the no. of minimum marks he should get in the third test to have an average of at least 60 marks.

Answer 1

3 tests to have an average of 60 marks:

Sum = 3 x 60 = 180

.

Sum of the 2 tests Ravi already got:

Sum = 70 + 75 = 145

.

Minimum marks he needs to get for his third test:

180 - 145 = 35

.

Answer: Ravi needs to get get 35 marks for his third test.