A student scores an average of 70 in four subjects. What should he score in the fifth subject to have an average of 75?
Show answer & explanation
Correct answer: A
Explanation
Average of four subjects = 70
Total marks for four subjects = 70 × 4 = 280
Total marks for five subjects = 75 × 5 = 375
Marks required in the fifth subject = 375 − 280 = 95