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Maria purchased brand X pens for TK. 4.00 a piece and brand Y pens for TK. 2.80 a piece. If Maria purchased a total of 12 of those pens for TK. 42.00, how many brand X pens did she purchase ?

Maria purchased brand X pens for TK. 4.00 a piece and brand Y pens for TK. 2.80 a piece. If Maria purchased a total of 12 of those pens for TK. 42.00, how many brand X pens did she purchase ? Correct Answer 7

১৯৪৪ সালে ব্রেটন উডস সম্মেলনের মাধ্যমে বিশ্বব্যাংক প্রতিষ্ঠিত হয় । বিশ্বব্যাংক গ্রুপের অঙ্গসংস্থা হলো পাঁচটি – IBRD,IDA,IFC,ICSID ও MIGA । বিশ্ব বাণিজ্য সংস্থা (WTO) যাত্রা শুরু করে ১ জানুয়ারী ১৯৯৫ ।

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