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23 July, 14:31

When you first start a car after it has been sitting for more than an hour, it pollutes up to ... times more than when the engine is warm.

10

2

20

5

+2
Answers (2)
  1. 23 July, 17:10
    0
    20 time more then when it's warm
  2. 23 July, 18:17
    0
    Has to be at most 20
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