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Hunter-Best
[27]
3 years ago
10
Lucas is offered either 15% or 21$ off his total shopping bill. How much would have to be spent to make 15% option the best one?
Mathematics
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answer:
Harman
[31]
3 years ago
8
0
Assume that the amount of money that Lucas would have to spend is "x".
Now, Lucas is offered:
either 15% of his total shopping which can be written as 0.15x
or 21$
We want the 15% to be a better option, therefore:
0.15x > 21
Solve the inequality for x:
0.15x > 21
x > 21/0.15
x > 140
Therefore, for the 15% back to be a better option,
Lucas has to spend more than $140
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