Question

if x:y =1:3 and y:z =7: 3 then find x:y

Answer 1

x:y=1:3=7:21

y:z=7:3=21:9

now X:Y:Z=7:21:9

so X:Z=7:9

but in question x:y is asked but it is given in question itslef

Answer 2

Answer:

HEY MATE!!

Step-by-step explanation:

WE KNOW ,

x:y = 1:3 = 1×7 : 3×7 = 7 : 21

y:z = 7:3 = 7×3 : 3×3 = 21 : 9

SO, x:y:z = 7 : 21 : 9

THEN , X : Z = 7:9

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