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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?

Respuesta :

arokoyuola

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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