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18 Nov 2003, 11:28
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What is x?
A. X is three times the sum of its digits
B. X is a two digit number
The official answer: A
ShouldnтАЩt it be C?
A. X is three times the sum of its digits
B. X is a two digit number
The official answer: A
ShouldnтАЩt it be C?
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This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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18 Nov 2003, 11:49
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Not sure, but this is how I solve it:
X=ab ( a=tens, b=ones)
(10*a )+ b=3 (a+b)
a=7/2 b, if x is two digit, b should be 2 to make a less than 10, therefore b=2 and a=7
x= 72
X=ab ( a=tens, b=ones)
(10*a )+ b=3 (a+b)
a=7/2 b, if x is two digit, b should be 2 to make a less than 10, therefore b=2 and a=7
x= 72
