Last week, kimi's fruit stand sold 3 7/10 boxes of nectarines. down the road, tyler's fruit stand sold 2 times as many boxes of nectarines as kimi's did. how many boxes of nectarines did tyler's fruit stand sell?
simplify your answer and write it as a proper fraction or as a whole or mixed number.

                     7
Kimi  sold  3  ---  boxes
                    10
       3 * 10 + 7        30 + 7
=      =
         10                   10

     37
= 
    10

Tyler sold  two times Kimi.  So Tyler sold

=    37                37 * 2
       * 2    = 
     10                  10

       37 * 2          37
=      =            OR
       5 * 2            5

         2
=  7 
         5

Iimagine the answer is b.