A person purchased 76 cows and sold 40 at 19 % profit , 16 at 25% profit and 20 at 15 profit over all he got profit of Rs 6570. Find C.P. of 1 cow.

Options

A. Rs 450
B. Rs 425
C. Rs 420
D. Rs 400

Answer

A

Explanation

माना कि एक गाय का क्रयमूल्य Rs x है
`:.` कुल लाभ= Rs 6570
`rArr (x xx (15)/(100))xx20+((40xx19xx x)/(100)+(16xx25x)/(100))=6570`
`rArr 3x+7.6x+4x=6570`
`rArr 14.6x=6570`
`rArr x=(6570)/(146) Rs 450`