In a 2- hour examination of 100 questions, there are 30 grammar questions. If half as much time should be allowed for each grammar questions as for each of the other questions, how many minutes should be spent on all the grammar questions?

Let x [if gte msEquation 12]>^{x} and Total time for all the grammar question = 30(`x/2` ) = 15x [if gte msEquation 12]>

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