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1. Halim purchased brand A pen for Taka 200 each and brand B per for Taka 100 each. If he purchased a total of 8 of these pens for Taka 1,200 how many pens of brand A did he purchased ?

  • A. 3
  • B. 3
  • C. 3
  • D. 3

Answer: Option B

Explanation:

ধরি, A brand এর কলম সংখ্যা x টি

B brand এর কলম সংখ্যা ( 8 - x) টি

200x + ( 8 - x) × 100 = 1200

200x + 800 - 100x = 1200

100x = 1200 - 800

x = 400/100

x = 4


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