Jhon used to spend \$30 a month on baldness treatment. He stopped treatment 10 months ago and has been completely bald for the last 7 months. If he used to cut his hair twice a month and spent \$20 per cut, the savings he has made are:
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$440
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$460
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$280
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$580
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$490
Try to solve it before checking the answer.
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$580
Jhon saves:
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On treatment: \$30 per month during 10 months = \$300
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On hair cuts: \$40 during 7 months = \$280
In all, he saves: