A student scored 65 marks in first language , 50 marks in science,55 marks in social science and some marks in mathematics.if the average marks scored by him in all the four subjects is 60, then the marks scored by him in mathematics is
Answers
Answer:
Your answer is
Step-by-step explanation:
Let the marks in maths be x
65+50+55+x/4=60
170+x=240
x=240-170
x=70
So marks scored by him in mathematics are 70
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The marks scored by the student in Mathematics is 70
Given :
- A student scored 65 marks in first language , 50 marks in science , 55 marks in Social science and some marks in Mathematics .
- The average marks scored by him in all the four subjects is 60
To find :
The marks scored by the student in Mathematics
Solution :
Step 1 of 3 :
Calculate total marks obtained in four subjects
Here it is given that average marks scored by the student in all the four subjects is 60
So the total marks obtained in four subjects
= 4 × 60
= 240
Step 2 of 3 :
Calculate the total marks obtained in three subjects
It is given that the student scored 65 marks in first language , 50 marks in science , 55 marks in Social science
So total marks obtained in three subjects
= 65 + 50 + 55
= 170
Step 3 of 3 :
Calculate marks scored by the student in Mathematics
Hence marks scored by the student in Mathematics
= Total marks obtained in four subjects - Total marks obtained in three subjects
= 240 - 170
= 70
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