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The average of two numbers is 81. The difference between the number is 26. What is the smaller number?

2 answers

[ a+b ]/2 = 81
so
a+b = 162

but b = a+26
so
2 a + 26 = 162
2 a = 136
a = 68

the average of three number is 25. two of the numbers are 18 and 40 what is the third number?

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