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4 February, 15:18

Luke has $120 to buy two watches that cost $58 each and one chain for $13. Select the answer that uses the best estimation to decide whether Luke has enough money.

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  1. 4 February, 18:40
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    We conclude that Luke does not have enough money to buy two watches and one chain, because $129 > $120.

    Step-by-step explanation:

    We know that Luke has $120 to buy two watches that cost $58 each and one chain for $13. We caclulate whether Luke has enough money.

    Therefore, we have

    2 · $58 + $13 = $116 + $13 = $129

    $129 > $120.

    We conclude that Luke does not have enough money to buy two watches and one chain, because $129 > $120.
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