Question
A test consists of 20 questions, where each question is
worth either 3 marks or 5 marks. The total marks for the entire test add up to 70. How many questions in the test carry 5 marks?Solution
Total questions = 20Let number of 5 mark questions = a5a + 3(20-a) = 702a + 60 = 70or a = 5
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Given below sentence with two blanks. Below sentence are given four pair of words among which one pair might fill the blank. If none of the words fill ...
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...
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