At a photocopy center, the first 10 copies cost x Taka each. Each of the next 50 copies costs 2 Taka less per copy. From the 61st copy, the cost is 1 Taka per copy. In terms of x how much does it cost in Taka to have 200 copies made?

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Accepted Answer

সঠিক উত্তর: । ব্যাখ্যা: 200 কে ভাগ করতে হবে এভাবে; 10 + 50 + 140\nতাহলে খরচ হবে = $10x + 50(x-2) + 140 \times 1 = 10x + 50x - 100 + 140 = 60x + 40$