Question

There are deer and peawingspans in a zoo. By counting heads they are 80. The number of their legs is 200. How many peawingspans are there ?
A. 20 B. 30
C. 50 D. 60

Answer 1

How many legs peawingspan has??

Answer 2

@waterineyes can i put wut i think it is then u correct me?

Answer 3

wut is a peawingspan anyways?

Answer 4

its a bird

Answer 5

Oh so it has 2 legs then

Answer 6

Okay..

Yeah Sure @dmezzullo

Answer 7

yes then ?

Answer 8

Ok so theres 40 peawingspans and 40 deer,
so deer have 4 legs, so 40 times 4 = 160
then the peawingspans have 2 legs and there are 40 of them so 20 so then there is ur other 40 u were missing so the answer would be 40. but where did i go wrong @waterineyes

Answer 9

Just system of linear equations:
x : deer and y : peawingspan..
x + y = 80
4x + 2y = 200

So:

4x + 4y = 320
4x + 2y = 200

2y = 120

y = 60..