the mean of 20 terms is 35 . If each number is decreased by 10% , what will be the new mean.
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Answer:
Step-by-step explanation:
the new mean will be =old mean divided by 5
as all terms are divided by 5
new mean=35/5=7 is the required answer
nyshadavuddanti:
but I think the answer is 34.9
ya you are right
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if each number is decreased by 10% then the mean will also decreased by 10%
So the new mean will be = 35 - (10% of 35) = 31.5
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