Difference between revisions of "2013 AMC 12A Problems/Problem 5"

(Created page with "Add up the amounts that Tom, Dorothy, and Sammy paid to get $<math>405</math>, and divide by 3 to get $<math>135</math>, the amount that each should have paid. Tom, ha...")
 
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Tom, having paid &#036;<math>105</math>, owes Sammy &#036;<math>30</math>, and Dorothy, having paid &#036;<math>125</math>, owes Sammy &#036;<math>10</math>.
 
Tom, having paid &#036;<math>105</math>, owes Sammy &#036;<math>30</math>, and Dorothy, having paid &#036;<math>125</math>, owes Sammy &#036;<math>10</math>.
  
Thus, <math>t - d = 30 - 10 = 20</math>.
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Thus, <math>t - d = 30 - 10 = 20</math>, which is B

Revision as of 22:34, 6 February 2013

Add up the amounts that Tom, Dorothy, and Sammy paid to get $$405$, and divide by 3 to get $$135$, the amount that each should have paid.

Tom, having paid $$105$, owes Sammy $$30$, and Dorothy, having paid $$125$, owes Sammy $$10$.

Thus, $t - d = 30 - 10 = 20$, which is B

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