Discuss Forum

1.

By mixing two qualities of pulses in the ration 2:3 and selling the mixture at the rate of Tk. 22 per kilogram, a shopkeepers makes a profit of 10%. If the cost of the smaller quantity be TK. 14 per kg the cost in Tk per kg of the larger quantity is:

  • A. 23
  • B. 23
  • C. 23
  • D. 23

Answer: Option B

Explanation:

 মনে করি বেশি পরিমাণের ফলে এর মূল্য x টাকা দেওয়া আছে, কম পরিমানঃ বেশি পরিমান=2:3 অনুপাতদ্বয়ের যোগফল=2+3=5 তাহলে, 5 কেজি এর ক্রয়মূল্য=14×2+x×3=28+3x এবং 5 কেজি এর বিক্রয়মুল্য=22×5=110 ∴লাভ=110-28+3x=110-28-3x=82-3xপ্রশ্নমতে,82-3x28+3x×100%=10%10% লাভ⇒82-3x28+3x=10100⇒82-3x28+3x=110⇒820-30x=28+3x⇒-33x=-792x=24

Post your comments here:

Name:
Mobile:
Email:(Optional)

» Your comments will be displayed only after manual approval.