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What's your problem?frances left a 12% tip on a meal. Including the tip, its cost was $56.00. What was the cost before the tip?

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Elessaelle
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SOURCE: Frances left a 12% tip on a meal. Including the

The cost before tip is X. the cost after tip is X+12%(X) which is equal to X+0.12X=1.12X (you convert percent to decimal number, 12%=0.12). Now you can write 1.12X=47.04 so X is 47.04/1.12=42$.

Posted on Sep 05, 2011

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Frances left a 12% tip on a meal. Including the tip,it's cost was $47.04. wHAT WAS THE COST BEFORE THE TIP?


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3 Friends went for dinner. the bill was $50. As none of them had change, they put together $20 each. The waitor got $10 back. They left $4 as waitor's tip and divided the remaining $6 amongst themselve...


Paid $20-00 each.
The meal cost $16-66 each = total of $50-00
The tip cost $1-33 each = total of $54-00
Add Change $2- each = total $60-00


Paid $20-00. Cost of dinner for each friend is not $18-00, it is $16-66. Cost of dinner including tip is $18-00 each. $18-00 x 3 = $54-00. Then the question adds $4-00 as a tip. This has already been accounted for in the $18-00. Plus the $6-00 change =$60-00.

For some reason the question tricks/confuses the brain. You have to work backwards from $60-00. Take away $6-00 in change and it's $54-00. This divided by 3 = $18-00 which is what everyone paid for dinner and the tip. Should be straightforward but in reality it's not.

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