The arithmetic mean of a set of numbers is 12. The mean of another set of
numbers is 15. If the combined mean of both sets is 12.5, then what will be
the ratio of the frequency of both the groups?
Five years ago, the ratio of Jaimini's and Jatin's salaries was 1 : 3 Every year Jaimini's salary increased by Rs. 300 and Jatin's salary is increased by Rs. 100. If after five years from today their salary is the same, then what is the present salary of Jatin?
Read the given statements and conclusions carefully and choose which
of the conclusions logically follows from the statement.
Statements:
I. All cups are porcelain.
II. Some porcelain are white.
Conclusion:
1. Some white are porcelain.
2. No cup is white.
