Question

if x:y = 1:3 and y:z = 2:5, find x:y:z

Answer 1

2*(x:y =1:3)
x:y=2:6
3*(y:z=2:5)
y:z=6:15

x:y:z=2:6:15

Answer 2

x/y=1/3

y/z=2/5

let us make y similar by taking their l.c.m

the l.c.m of 3,2 is 6

so,  x/y= 1*2/ 3*2

            = 2/6

     y/z=2*3/5*3

               6/15

x:y:z= 2: 6:15

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