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Which situation is best represented by the integer $- 12$ ?

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The length of curtains is increased by

12

inches

The price of petrol is reduced by Rs.

12

The size of picture is enlarged by

12

percent

The temperature rises by

12^{o} C

answer is B.

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Detailed Solution

Given an integer -12.
Situation in option (1), (3), (4) represents

+ 12

as it represents an increase in quantity.
Let increase in the petrol be represented by

+

and decrease in the petrol be represented by

-

.
Situation in option (2) represents

- 12

Therefore, option (2) is correct.

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