Question

The price of one cow and one horse is₹240 the price will be ₹320 if the price of the horse is increased by 30%and that of the cow by 40%.show that the price of the horse i s double that of the cow

Answer 1

hey buddy here is your answer

let cow price is X

horse price is = y

now we have to show that horse price is double of cow price so basically we have to prove

==> Y= 2X

so according to first condition

X+Y = 240

X + (2X) = 240

3X = 240

X = 240/3 = 80

now put X value in equation

X + 2X = 240

80+ 2*80 = 240

80+ 160 = 240 ( answer) ( proved price is double )

now applying second condition
if the horse price increase 30% .

horse price = 160+30%
==> 160+48 = 208

cow price increase = 40%
==> 80+ 32 = 112

new price after price increases X+Y =320
208 + 112 = 320 (answer)