First, if 6 pens are 90 rupees, then one is 90 divided by 6, which is 15 rupees. So 11 pens would be 11 times 15, making it 165 rupees. But life isn't so simple, no? When the school supplier comes, he always says, "For 11, just give 150, it's a round figure for a good customer." So the real answer is less, because a small shop runs on susegad and good faith, not just maths.
#education#class
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