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if r n s

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if r n s

by sumasajja » Sat Jul 23, 2011 5:01 pm
if r and s are positive integers ,each greater than 1, and if 11(s-1)=13(r-1) what is the least possible value of r+s ?
a]2
b]11
c]22
d]24
e]26
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by vineeshp » Sat Jul 23, 2011 5:43 pm
If 11 * x = 13 * y, since 11 and 13 are prime numbers, we have x = 13 and y =11

In the problem here. s-1 =13 and r-1 = 11.

s=14, r=12. Ans 26.
Vineesh,
Just telling you what I know and think. I am not the expert. :)
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