Ami decided to score an average of 90 marks in the four subjects - Maths, Physics, Chemistry and Biology. The maximum marks in each paper was 100. She scored 75 in Maths and 95 in Physics. Which of these, if she scores, will ensure that she gets the desired average score?
Answers
Answered by
1
Given:
Ami decided to score an average of 90 marks in the four subjects - Maths, Physics, Chemistry and Biology. The maximum marks in each paper was 100. She scored 75 in Maths and 95 in Physics.
To find:
Which of these, if she scores, will ensure that she gets the desired average score?
Solution:
From the given information, we have the data as follows.
Ami decided to score an average of 90 marks in the four subjects - Maths, Physics, Chemistry and Biology. The maximum marks in each paper was 100. She scored 75 in Maths and 95 in Physics.
(P + C + M + B)/4 = 90
(95 + C + 75 + B)/4 = 90
95 + C + 75 + B = 90 × 4
C + B + 170 = 360
C + B = 190
Therefore, the sum of the scores of chemistry and biology must be equal to 190.
Similar questions