The average working hours per month of the staff aged over 50 years in a factory were 160 and that of the staff aged under 50 years were 210. The mean working hour per month of all the staff was 200. The ratio of the number of the staff aged over 50 to that of the staff aged under 50 is:
The correct answer is D
As per Ranking of Special Category which state acquires top position as per NFSA?
Which of the following gases contributes maximum in global warming
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The soil health card scheme broadly advertised by the union government under the slogan .
e-National Agriculture Market (e-NAM) was launched in the year___
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...An important green-house gas others than methane being produced from the agricultural fields is
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