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The water acidity in a pool …

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The water acidity in a pool is considered normal when the average pH reading of three daily measurement is between 7.2 and 7.8 if the first two pH reading a 7.48 and 7.85 find the range of PH value for the third reading that will result in the aciditylevel being normal

Posted by Chitra Verma 4 years, 8 months ago

CBSE > Class 11 > Mathematics

1 answers

Gaurav Seth 4 years, 8 months ago

Let x be the third reading of the pH level.

The acidity of the pool is normal when the average pH reading measurements is between 7.2 and 7.8

The first two measurements are 7.48 and 7.85

The average

Similarly,

The average

Thus the range third reading of the acidity of the pool should be

1Thank You

ANSWER

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