Exam Maths Puzzle Numerical Ability Time and Work

log x = 1; log y = 2 then then value of log y /log x
a) 1/4
b) 2/50
c) 1/6
d) 1
e) data insufficient

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Exam Other Question

In a chess competition involving some men and women, every player needs to play
exactly one game with every other player. It was found that in 45 games, both the players
were women and in 190 games, both players were men. What is the number of games in
which one person was a man and other person was a woman?
Ravana spends 30% of his salary on house rent, 30% of the rest he spends on his children’s education and 24% of the total salary he spends on clothes. After his expenditure, he is left with Rs 2500. What is Ravana’s salary ?