Multiple choice

A person bought 76 cows and sold 20 cows at 15% profit, 40 cows at 19% profit and remaining 16 cows at 25% profit and got a profit of Rs.7300 as a whole. Find the cost price of each cow? एक आदमी 76 गाये खरीदता है 20 गायों को वो 15 % के लाभ पर बेचता है 40 गायो को 19 % के लाभ पर और बचे हुए 16 गायो को 25 % के लाभ पर और उसे 7300 का कुल लाभ होता है तो एक गाय का क्रय मूल्य ज्ञात कीजिये ?

  1. Rs./रू 450

  2. Rs./रू 480

  3. Rs./रू 420

  4. Rs./रू 500
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the cost price of each cow be x. Total profit = 20(0.15x) + 40(0.19x) + 16(0.25x) = 3x + 7.6x + 4x = 14.6x = 7300. Solving: x = 7300/14.6 = 500. Therefore, each cow costs Rs. 500. The key is to calculate the profit from each group and sum them.

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