Let the first number be
X
Then the second number is x+
5
Then the third number is x+
10
Now we are given that the sum of the three terms is
120.
==> x + x+ 5 + x+ 10 =
120
==> 3x + 15 =
120
Now we will subtract 15
.
==> 3x = 105
Now we
will divide by 3.
==> x =
35
Then the numbers are: 35, 40 , and
45.
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