If r = 3z and 9z = 6y,then r =?

A    y

B    2y

C    5y

D    10y

Solution

Correct Answer: Option B

 

r = 3z

or, 3r = 9z (multipied by 3)

Now,

A/Q,

9z = 6y

Thus,

3r = 6y

or, r = 6y/3 = 2y

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