archanadesh Posts: 1, Reputation: 1 New Member #1 Dec 26, 2011, 11:26 PM
Help me solve this with quadratic equations
Cost of bananas is increased by Re.1 per dozen. One can get 2 dozen less for Rs.840.Find the original cost of one dozen bananas?
 Unknown008 Posts: 8,076, Reputation: 723 Uber Member #2 Dec 27, 2011, 12:14 AM
I'm having a hard time understanding your question, plus charging higher costs per dozen for more bananas doesn't really make sense... One would rather charge less for buying in larger bulk.
 abhakohale Posts: 1, Reputation: 2 New Member #3 May 14, 2012, 04:23 AM
let original price = Rs. X...

bananas that can be bought = 840 / x...

increased price = Rs. (x + 1)...

bananas that can be bought with the increased price = 840 / (x +1)...

As,
840/x - 840/x+1=2

By solving this equation we get
original price = Rs. 20 (ans)...

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