👤
DANNALABATA007IN
Answered

ken has some ducks and dogs in his backyards. There are 45 heads and 130 legs all in all. How many ducks are there? How about dogs?​

Sagot :

ONEKPHIN

Answer:

25 ducks, 20 dogs

Step-by-step explanation:

Let x be duck

Y be dog

X+y = 45

2x+4y=130 (since 2 legs for duck, 4 legs for dog)

Multiply 1 st eq by -2

-2x-2y=-90

2x+4y=130

Combine

2y=40

Y=20

Then,

X=25

#Sana Nakatulong :)

In Studier: Other Questions