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timurjin [86]
4 years ago
13

An animal shelter spends $3.50 per day to care for each bird and $6.50 per day to care for each cat. Brooklyn noticed that the s

helter spent $146.50 caring for birds and cats on Friday. Brooklyn found a record showing that there were a total of 29 birds and cats on Friday. How many birds were at the shelter on Friday?
Mathematics
1 answer:
Vikki [24]4 years ago
8 0

Solution: Let x be the number of birds and y be the number  of cats.

x+y=29 \implies y=29-x

3.50 x +6.50 y= 146.50

3.50 x+6.50(29-x)=146.50

3.50x+188.5-6.5x=146.50

3x=188.5-146.50

3x=42

x=\frac{42}{3} =14

Therefore, there were 14 birds at the shelter on Friday


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