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A train traveled p miles in 40 minutes and completed the remaining 200 miles of the trip in q minutes. What was its average speed in miles per hour for the entire trip?

Correct Answer: 60(p+200/(40+q)
>>বাংলা ভাষায় ব্যবহৃত মিশ্র কিছু শব্দ - - - আইনজীবী = (ফারসি + তৎসম) খ্রিস্টাব্দ = (ইংরেজি + তৎসম) বেটাইম = (ফারসি + ইংরেজি) ডাক্তারখানা = (ইংরেজি + ফারসি) পকেটমার = (ইংরেজি + বাংলা) হাটবাজার = (বাংলা + ফারসি) কালিকলম = (বাংলা + আরবি) হেডমৌলভী = (ইংরেজি + ফারসি) মাস্টারমশাই = (ইংরেজি + তদ্ভব) হেডপণ্ডিত = (ইংরেজি + তৎসম)

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