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lakkis [162]
3 years ago
8

Ami decided to score an average of 90 marks in the four subjects - Maths, Physics, Chemistry and Biology. The maximum marks in e

ach 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?
Mathematics
1 answer:
Monica [59]3 years ago
3 0

Answer:

85

Step-by-step explanation:

90(4) = 75 + 95 + 2x

360 = 170 + 2x

2x = 360 - 170

2x = 190

x = 85

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