RRB NTPC · Question 75
In an examination, a student gets on average 76 marks. The total marks for five subjects are 500. His marks in 4 subjects are mentioned; calculate the marks obtained by the student in Mathematics marked as “x” in the table below.
| Subject | Maths | English | Sanskrit | Science | Social Science |
|---|---|---|---|---|---|
| Marks Obtained | x | 87 | 83 | 78 | 57 |
A. 80 B. 83 C. 72 D. 75
Show answer & explanation
Answer: (B) D
Explanation
Average 76 over 5 subjects means a total of 380. The other four marks add to 87 + 83 + 78 + 57 = 305, so the Maths mark x = 380 − 305 = 75.