A question on time

Question

here is the question:

Freida must take a 4-hour examination containing 200 questions, 50 of which are math questions. Twice as much time should be allowed for each math question as for each other type question. What is the total number of minutes she should allow for the math question? 

Answer 1

t represents the time spent on each of the "other" questions.

2t represents the time spent on each of the math questions.

 

150t + (50)(2t) = 240       minutes in 4 hours

150t + 100t = 240

250t = 240

t = 0.96

2t = 1.92

 

Frieda should spend just under two minutes on each mathematics question.