A person purchased 3 cows and 8 goats for Rs 47200 If he had purchased 8 cows and 3 gots then he would have to give Rs 53000 more . Find cost price of each cow.

Options

A. Rs 12,000
B. Rs13,000
C. Rs 10,000
D. Rs 11,000

Answer

A

Explanation

माना कि गाय का क्रयमूल्य x तथा बकरी का क्रयमूल्य y है।
`:. 3x + 8y = 47,200` ................. (i)
`8x + 3y = 100200` …………….. (ii)
समी. `(i)xx3-"समी". (ii)xx8` करने पर
`9x + 24y-64x-24y = 141600-801600 implies 55x = 660000`
`implies x =660000/55`
`implies x= 12,000`