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The mean of 200 numbers is …

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The mean of 200 numbers is 180. If each number is incresed by 10 what is the new mean

Posted by Shailaja Buddala 8 years, 9 months ago

CBSE > Class 09 > Mathematics

2 answers

Rashmi Bajpayee 8 years, 9 months ago

Mean = sum of 200 numbers / 200

180 = sum of 200 numbers / 200

Sum of 200 numbers = 180 × 200 = 36000

Now, if each number is increased by 10, then

Sum of 200 numbers = 36000 + 200 × 10 = 38000

New mean = 38000/200 = 190

New mean is 190

1Thank You

Jd Shukla 8 years, 9 months ago

Answer is 170

0Thank You

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CBSE > Class 09 > Mathematics