Question

An animal shelter spends $3.50 per day to care for each bird and $4.00 per day to

care for each cat. Madelyn noticed that the shelter spent $82.00 caring for birds and
cats on Thursday. Madelyn found a record showing that there were a total of 22 birds
and cats on Thursday. How many birds were at the shelter on Thursday?

Answer 1

There were 12 birds on Thursday

Explanation:

Two equations are needed in a systems of equations.

82=3.5(b)+4(c)

Finding a relation between b and c:

22=b+c

c=22-b

Replacing c with 22-b we get:

82=3.5(b)+4(22-b)

82=3.5b+88-4b

82=88-0.5b

-6=-0.5b

b=12