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  • 22-02-2018
  • Mathematics
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I do not understand “How many bags of lettuce must be purchased for Val’s Veggies to be the cheaper option?”

I do not understand How many bags of lettuce must be purchased for Vals Veggies to be the cheaper option class=

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Аноним Аноним
  • 22-02-2018
Let the number of bags to be purchased be x
Option Val : 250 + 1.50x
Option Sally : 100 + 4x

For Val to be the cheaper option:
250 + 1.5x < 100 + 4x
100 + 4x > 250 + 1.5x 
100 + 4x - 100 > 250 + 1.5x - 100
4x > 150 + 1.5x
4x - 1.5x  > 150 + 1.5x - 1.5x
2.5x > 150
x > 150 ÷ 2.5
x >  60

To make Val the cheaper option, he needs to buy more than 60 bags of lettuces.


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