Required 1. A man counted his animals, 80 heads and 260 legs (ducks and goats). how many goats are there?

30
60
80
50

50

Step-by-step explanation:

d-nr of ducks

g- nr of goats

2*d+4*g=260

d+g=80            /*(-2)

2d+4g=260

-2d-2g=-160

      2g=100

      g=100/2

     g=50

Option D is the correct option

Solution,

Let no.of ducks be X

Let no.of goats be y.

Total heads= X+y=80 ➡️ equation (i)

Total legs= 2x+4y=260➡️ equation (ii)

X= 80-y

Number of goats= 50

Hope this helps...

Good luck on your assignment...

a reflection across the x axis and a 90 degree rotation left and right.