MHB How Much Money Did I Have After Buying 15 Burgers?

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After purchasing 15 burgers, $3.80 remains, indicating that an additional burger costs $4.70. This suggests the price of each burger is $8.50, leading to a total expenditure of $127.50 for 15 burgers. The remaining amount plus the spent total equals $131.30, which is the initial amount. The discussion highlights the need for realistic figures in such calculations.
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After I have purchased 15 same-priced burgers it remains 380 dollars and 470 fails me to buy another how much DiD I have? Answer $ 13130
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Answer 13130 dollars
Despite I think it is a bad answer
 
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leprofece said:
After I have purchased 15 same-priced burgers it remains 3.80 dollars and 4.70 fails me to buy another how much DiD I have? Answer $ 131.30
I think that those amounts of money are unrealistically large. I have inserted a decimal point to bring them down to size.

If you have $\$3.80$ remaining, and you need an extra $\$4.70$ to buy an additional burger, then the price of a burger must be $\$3.80 + \$4.70 = \$8.50$. The cost of 15 burgers would then be $\$8.50 \times 15 = \$127.50$. Having spent that amount, you have $\$3.80$ remaining. Therefore you must have started with $\$127.50 + \$3.80 = \$131.30$.
 

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