Average 110

The average of five numbers is 1.3 their sum is?
The arithmetic mean of the numbers 0.04; 0.014; 0.21 is?
The arithmetic mean of four decimal numbers is 2.5. Three of these numbers are 1.8; 0.65; 3.1 the fourth number is?

Correct answer:

a =  6.5
b =  0.088
c =  4.45

Step-by-step explanation:

a=5 1.3=6.5
b=30.04+0.014+0.21=0.088
2.5 = 41.8+0.65+3.1+c  c=2.5 41.80.653.1=4.45



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