the mean of five numbers is 20. the mean of the first three numbers is 16. The fifth number is greater than the fourth by 8. Find the fifth number

3 answers

3*16 + x + x+8 = 5*20
so now just solve for x and then x+8
x=22 so x plus 8 =30
34 since 20*5=100
16*3=48
52/2=26+8=34
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