24 is 30% of what?

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Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Which of the following is not a subset of {1,2,3}?

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount