In two successive year 100 and 75 students of school appeared at the final examination. Respectively 75% and 60 % of them passed. The average rate of pass is:
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Q:
In two successive year 100 and 75 students of school appeared at the final examination. Respectively 75% and 60 % of them passed. The average rate of pass is:
- 1$$80{1\over2}\%$$false
- 280%false
- 3$$68{4\over7}\%$$true
- 478%false
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