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Secondary 1 | Maths
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Date Posted: 4 years ago
Views: 286
Let the MIDDLE number be x.
The previous odd number is x - 2 (a jump of 2) while the subsequent odd number is x + 2.
(x - 2) + x + (x + 2) = 225
x - 2 + x + x + 2 = 225
3x = 225
x = 75
The middle number is 75.
The previous number is 73.
The subsequent number is 77.
The previous odd number is x - 2 (a jump of 2) while the subsequent odd number is x + 2.
(x - 2) + x + (x + 2) = 225
x - 2 + x + x + 2 = 225
3x = 225
x = 75
The middle number is 75.
The previous number is 73.
The subsequent number is 77.
See 2 Answers
Let smallest number = x, second number = x+2 and third number = x+4. (since all are odd numbers so the difference is 2)
Sum = 225
x + x + 2 + x + 4 = 225
3x + 6 = 225
3x = 219
x = 73
Numbers are 73, 75, 77
Sum = 225
x + x + 2 + x + 4 = 225
3x + 6 = 225
3x = 219
x = 73
Numbers are 73, 75, 77
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