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Opposite of a Number

If 15 km east...

Question

If 15 km east from a place is denoted as +15 km, what is the integer that represents 15 km west of it?

A

+14 km

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B

+15 km

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C

-14 km

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D

-15 km

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Solution

The correct option is D -15 km
As, east is denoted by + sign so west which is opposite of east can be represented by negative sign.
So, 15 km of east = +15 km
15 km of west = -15 km

Hence, option D is correct.

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