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yulyashka [42]
3 years ago
11

Emily's meal costs $32.75 and Darren's meal cost 39.88. Emily treats Darren by paying for both meals, and leaves an 18% tip. How

much did Emily pay total?
Mathematics
1 answer:
ivanzaharov [21]3 years ago
3 0
$32.75 + $39.88 = $72.63
$72.63 • 18 = 1,307.34
1,307.34/100 = 13.0734 which you make into $13.07 tip.
13.07 + 72.63 = $85.70
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Hello from MrBillDoesMath!

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Discussion:

This one took some trial and error! At first I listed all 2 digit primes, looked at the list, but didn't know how to proceed. So, I took the smallest 2 digit primes numbers:  11 and 13 and wondered if their product, 13*11 = 143, could be represented as the sum of  3 consecutive primes.   I went back to my list of primes,  added groups of three consecutive numbers that seemed to be in the right range to give the desired sum, and stumbled on  43, 47, and 53!

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