{"status": "success", "data": {"description_md": "On a trip from the United States to Canada, Isabella took $d$ U.S. dollars. At the border she exchanged them all, receiving $10$ Canadian dollars for every $7$ U.S. dollars. After spending $60$ Canadian dollars, she had $d$ Canadian dollars left. What is the sum of the digits of $d$?\n\n$\\mathrm{(A) \\ } 5 \\qquad \\mathrm{(B) \\ } 6\\qquad \\mathrm{(C) \\ } 7\\qquad \\mathrm{(D) \\ } 8\\qquad \\mathrm{(E) \\ } 9$", "description_html": "<p>On a trip from the United States to Canada, Isabella took  <span class=\"katex--inline\">d</span>  U.S. dollars. At the border she exchanged them all, receiving  <span class=\"katex--inline\">10</span>  Canadian dollars for every  <span class=\"katex--inline\">7</span>  U.S. dollars. After spending  <span class=\"katex--inline\">60</span>  Canadian dollars, she had  <span class=\"katex--inline\">d</span>  Canadian dollars left. What is the sum of the digits of  <span class=\"katex--inline\">d</span> ?</p>\n<p> <span class=\"katex--inline\">\\mathrm{(A) \\ } 5 \\qquad \\mathrm{(B) \\ } 6\\qquad \\mathrm{(C) \\ } 7\\qquad \\mathrm{(D) \\ } 8\\qquad \\mathrm{(E) \\ } 9</span> </p>\n<hr><p>Full credit goes to <a href=\"https://maa.org/\">MAA</a> for authoring these problems. These problems were taken on the <a href=\"https://artofproblemsolving.com/\">AOPS</a> website.</p>", "hints_md": "", "hints_html": "", "editorial_md": "", "editorial_html": "", "flag_hint": "", "point_value": 1, "problem_name": "2004 AMC 10B Problem 7", "can_next": true, "can_prev": true, "nxt": "/problem/04_amc10B_p08", "prev": "/problem/04_amc10B_p06"}}