Question
Larky answered 8 out of every 10 questions in a test correctly. The test had 50 questions. The correct answers of larky are ____________.
- 45
- 20
- 40
- 40
Hint:
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
The correct answer is: 40
Here, it is given that larky answered 8 out of every 10 questions correctly. We have to find the total number of questions he answered correctly if there were 50 questions in the test.
We have, number of correct answers in 10 questions = 8.
Number of correct answers in 1 question = 8/10.
So, number of correct question he answered in 50 questions = 8⁄10 × 50 = 40.
Hence, the correct option is C or D.
We can also find the number of questions answered correctly by just multiplying the number of questions answered correctly out of 10 by 5.
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