Question

i cant understand pls tell the ans

Answer 1

cow 200
horse 280......

let the cost of cow is x

2x + x +80 =680
3x +80 = 680
3x=600
x=200

the cost of cow will be 200 .


and of horse is 280.

Answer 2

Let the cost of a horse be Rs.x.
Let the cost of two cows be Rs.2y

x + 27 = Rs.680.... (1)
x - y =Rs.80 ... (2)
.................................

3y = Rs. 600

So y = Rs.200
x - 200 = 80
x = 280
x : y = 280 : 200
= 7 : 5

Therefore two cows =2y that is 200+200=400 and one horse is x that is 280

Since 400+280=680