Question

a reason lab is planning to explore the north pole. ten members of the lab each have a dog team. there are 56 dogs in all. if there are only 7- and 5- dog teams how many of each will there be ??

Answer 1

By guess-and-check, three 7-dog teams and seven 5-dog teams.

Answer 2

x = 5 dogs
y = 7 dogs

x + y = 10
5x + 7y = 56

y = 10 - x
5x + 70 - 7x = 56
-2x = -14
x = 7
y = 3

7 5-dog teams
3 7-dog teams