Adm, ming, and clinton sold sandwiches in the ratio 4: 7: 3 to raise money for their scout troop. ming sold 91 sandwiches. how may sandwiches did the three boys sell altogether?

The ratio in which Adm, Ming and Clinton sold sandwiches = 4:7:3
Number of sandwiches sold by Ming = 91
Let us assume the common ratio to be = x
Then
7x = 91
x = 91/7
  = 13
Then
The number of sandwiches sold by Adm = 4 * 13
                                                                   = 52
The number of sandwiches sold by Clinton = 3 * 13
                                                                      = 39
So
The total number of sandwiches
 sold by Adm, Ming and Clinton = 52 + 91 + 39
                                                  = 182.
So a total of 182 sandwiches were sold by Adm, Ming and Clinton.
 

Iam pretty sure its a sorry if im wrong