Find the sum of the three consecutive multiples of 9 if the sum is 81.
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Answers
Answered by
2
Answer:
18,27,81
Step-by-step explanation:
Let the three consecutive multiples of 9 be k, k + 9 and k + 18. Given that, Their sum is 81. ∴ The Required Smaller number is: k ⇒ 18 .
Let the three consecutive multiples of 9 be
9(x-1),9(x),9(x+1)
sum=81
9(x-1+x+x+1)=81
9(3x)=81
27x=81
x=81/27
x=3
9(3-1),9(3),9(3+1)
9(2),9(3),9(4)
18,27,36
Answered by
4
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let 1 number be x
2and number be x+9
3rd number be x+18
x+x+9+x+18 = 81
3x+27 = 81
3x = 81-27
3x=54
x = 18
x = 18
x + 9 = 18 + 9 = 27
x + 18 = 18 + 18 = 36
your answers are :
18
27
36
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