Multiple choice

Two article A and B are sold at a profit of 20% and 25% respectively if the amount of profit received is the same, then the cost price of A and B may be; दो वस्तुओं A और B को क्रमशः 20% और 25% लाभ पर बेचा गया। यदि दोनों वस्तुओं पर हुआ लाभ बराबर है। तो दोनों वस्तुओं का क्रय मूल्य हो सकता है-

  1. 750, 450

  2. 680, 380

  3. 400, 320

  4. 500, 480
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let CP of A = a, CP of B = b. Profit on A = 0.2a, profit on B = 0.25b. Given profits are equal: 0.2a = 0.25b, so a/b = 0.25/0.2 = 5/4. Therefore a:b = 5:4. Checking options: (400, 320) gives 400/320 = 5/4, satisfying the condition. This is option C.

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