Statement 1:

Q=2T/7 -----> 7Q=2T

so, Q can be 2 and T can be 7 or Q can be 4 and T can be 14.

So, Statement 1 doesn't satisfy.

A and D out.

Statement 2:

T+7/2 =7(Q+2)/4 -----> 4T+14=7Q+14 -----> 4T=7Q

so, Q can be 4 and T can be 7 or Q can be 8 and T can be 14.

So, Statement 2 also doesn't satisfy.

Combining 1 and 2:

2T=7Q and 4T=7Q. This can be true only if T=0 and Q=0.

So, we know Q=0.

Hence, we get an answer for Q.

Answer is C.

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