Question

Dr. Potter provides vaccinations against polio and measles. Each polio vaccination consists of 444 doses, and each measles vaccination consists of 222 doses. Last year, Dr. Potter gave a total of 606060 vaccinations that consisted of a total of 184184184 doses. How many polio vaccinations and how many measles vaccinations did Dr. Potter give last year? Dr. Potter gave polio vaccinations and measles vaccinations.

Answer 1

32 and 28

Explanation:

Answer 2

x - number of polio vaccinations

y - number of measles vaccinations:

x + y = 60 / * ( - 2 )

4 x + 2 y = 184

--------------------------

- 2 x - 2 y = - 120

+

4 x + 2 y = 184

--------------------------

2 x = 64

x = 64 : 2

x = 32

32 + y = 60

y = 60 - 32

y = 28

Answer: There were 32 polio and 28 measles vaccinations.