Question

Mean of 10 values is 20, one value ia added then mean is increase by 2 what is the value?

Answer 1

mean of 10=20
therefore sum of 10=10×20=200
since 1 value is added then the no. of values is 11
mean increased by 2 means 20+2=22
therefore sum of 11=11×22=242
therefore the value is 242-200=42
hope this is correct!

Answer 2

42. mean= total/no of vlues.
total = 10×20
( 200+x)/11=22
x=242-200
×=42.
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