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word problem

by sud21 » Sat Jan 28, 2012 11:33 pm
A and B have only 10 dollars for their selections. Is the money enough for both of their selections?
1). B costs 4 dollars more than A
2). B costs twice as much as A
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by neelgandham » Sun Jan 29, 2012 10:22 am
and again the question doesn't seem to be properly framed.

A and B have only 10 dollars for their selections. Is the money enough for both of their selections?
1). B costs 4 dollars more than A
B = 4 + A
If A = 1, B = 5, then 10 dollars will be sufficient for their selections
If A = 100, B = 104, then 10 dollars will not be sufficient for their selections
2). B costs twice as much as A
B = 2A
If A = 1, B = 2, then 10 dollars will be sufficient for their selections
If A = 100, B = 200, then 10 dollars will not be sufficient for their selections
From 1 and 2
B = 4 + A
B = 2A
2A = 4 + A
A = 4 and B = 8, then 10 dollars will not be sufficient for their selections
IMO C
Anil Gandham
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