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Question

x 2 a b 3 8 6
y 36 4 9 24 c d
z e f 6 16 g 8
x,y,z are proportional to each other. What is the proportionality between y and z?

A
Direct
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B
Inverse
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C
Both
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D
None
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Solution

The correct option is A Direct
xy=2×36=3×24=72=k1x1y

xz=3×16=6×8=48=k2x1z

xy=k1,xz=k2

xyxz=k1k2

yz=k1k2=k3

yz

y is directly proportional to z.

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