easy · GMAT Quant
A traffic monitoring system places calibration cameras at integer station positions x along a linear express lane. Two speed-trap loops are situated at x = -7 and x = 5. The monitoring protocol requires that |x + 7| + |x - 5| ≤ 16.
How many integer station positions x satisfy this protocol?
- 13
- 16
- 17
- 21
- 28
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