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marta [7]
3 years ago
7

Lisa's barn has 20 animals that have 62 legs in total. She only has cows and geese. How many cows and how many geese does she ha

ve?
Mathematics
1 answer:
timurjin [86]3 years ago
7 0

Answer:

9 geese

11 cows

Step-by-step explanation:

Say x is cows, and y is geese.

x + y = 20 animals

x * 4 + y * 2 = 62

x = 20 - y

(20 - y) * 4 + y * 2 = 62

80 - 4y + 2y = 62

- 2y = -18

y = 9 geese

x = 20 - 9 = 11 cows

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