Maths trick
Number Theory
Level
2
if x,y,z are positive integers and 3x=4y=7z,then the least possible value of x+y+z is
49
84
33
61
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
x=4y/3, z=4y/7,
LCM of 3 & 7 = 21
put y=21
so x=28, & z=12
so x+y+z=61(Ans.)