Ok so start with the proportion 12/2 (the number of quizzes per 2 weeks) and set it equal to 18/X (X being the number of weeks that will equal 18 quizzes) after that cross multiply to get 12X=36. divide by 12 to get X=3 weeks
It would be 10 to the 5th power
X3 =1/8
x = (1/8) /3
x = 1/8 * 1/3
x = 1/24
Mary - M
<span>Jim - J </span>
<span>Mary's ticket number is one less than Jim's ticket number. </span>
<span>J - 1 = M </span>
<span>The product of their numbers is 812 </span>
<span>M * J = 812 </span>
<span>plus first equation into 2nd </span>
<span>(J - 1) J = 812 </span>
<span>J^2 - J - 812 = 0 </span>
<span>(J - 29) (J + 28) = 0 </span>
<span>J = 29 or -28, 29 cuz you can't have negative for question. </span>
<span>J = 29 </span>
<span>plus 29 in first equation, </span>
<span>29 - 1 = M </span>
<span>28 = M </span>
<span>Mary's ticket number is 28 and Jim is 29</span>