Question
find three consecutive odd integers such that the sum of the middle and largest integer is 21 more than the smallest integer
Answers
middle number --- x
1st number ---- x-2
3rd number --- x+2
middle + larger > smaller by 21
middle + larger = smaller + 21
x + x+2 = x-2 + 21
x = 17
the three numbers are 15, 17, 19
check:
sum of middle + larger = 17+19 = 36
the smaller = 15
is 36>15 by 21 ? , looks good
1st number ---- x-2
3rd number --- x+2
middle + larger > smaller by 21
middle + larger = smaller + 21
x + x+2 = x-2 + 21
x = 17
the three numbers are 15, 17, 19
check:
sum of middle + larger = 17+19 = 36
the smaller = 15
is 36>15 by 21 ? , looks good
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