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28 June, 11:11

Serena asked her parents if for their picnic they could have 20% more portions of coca-cola than they planned, and if each portion could be 20% bigger. Her parents agreed. By what percent more coca cola will they buy?

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  1. 28 June, 11:32
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    "20% more" means to multiply by 1.2 or 120%. So they would have 100%*1.2*1.2=144% of their original drinks that they were going to buy.
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