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Arif and Babu worked together to paint a house. Arif worked for 1 hour 45 minutes and Babu worked for 45 minutes. Babu's hourly rate is double the rate of Arif's. If the two toghther earned Tk 71.50, what is hourly rate of Arif in Taka?

Arif and Babu worked together to paint a house. Arif worked for 1 hour 45 minutes and Babu worked for 45 minutes. Babu's hourly rate is double the rate of Arif's. If the two toghther earned Tk 71.50, what is hourly rate of Arif in Taka? Correct Answer 22

ধরি, আরিফের প্রতি মিনিটের পারিশ্রমিক x টাকা বাবুর প্রতি মিনিটে পারিশ্রমিক 2x টাকা এখন, আরিফের 1 ঘন্টা 45 মিনিটের পারিশ্রমিক ( 60 + 45) x টাকা = 105x টাকা অপরদিকে, বাবুর 45 মিনিটের পারিশ্রমিক ( 45 × 2x) বা 90x টাকা প্রশ্নমতে, 105x + 90x = 71.50 বা, 195x = 71.50 x = 71.50/195 আরিফের প্রতি ঘন্টার উপার্জন ( 71.5/195 × 60) টাকা = 22 টাকা

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