If $$ {x+3y-{2z\over 4}}=6$$ , $$ {x+{2\over 3}}(2y+3z)=33$$ and $$ {1\over 7}{(x+y+z)+2z=9}$$, then what is the value of $$ {46x+131y}$$?

A man can row with the stream at 9 km/hr. and against the stream at 3 km/hr. His speed in still water is -

A wheel travels a distance of 22 km in 2500 revolutions. What is the diameter of the wheel?

In a 1500 m race, Chaitali beats Vrunali by 100 m and in 1200 m race, Vrunali beats Krutika by 75 m. If Chaitali and Krutika are compared, then for how much m Chaitali will beat Krutika in 900 m race?

A certain sum becomes Rs 840 in 3 years and Rs 1200 in 7 years at simple interest. What is the value (in Rs) of principal? 

What is the ratio of number of males in HR Department to the number of males in Accounts department respectively?

When a discount of 20% is given on a pizza, the profit is 32%. If the discount is 18%, then the profit is: