The monthly salaries of $A, B$ and $C$ are in the ratio $2: 3: 5$. If $C$'s monthly salary is $Rs. 12000$ more than that of $A$,then $B$'s annual salary is (in $Rs.$):

$x$ varies inversely as the square of $y$. Given that $y = 2$ when $x = 1$. The value of $x$ when $y = 6$ will be equal to:

When wheat is ₹ $13$ per $kg$,$75$ men can be fed for $15$ $days$ at a certain cost. How many men can be fed for $45$ $days$ at the same cost,when wheat is ₹ $1$ per $kg$?

If $a: b: c = 3: 4: 7,$ then the ratio $(a+b+c): c$ is equal to

$A$'s income is ₹ $140$ more than $B$'s income and $C$'s income is ₹ $80$ more than $D$'s. If the ratio of $A$'s and $C$'s incomes is $2:3$ and the ratio of $B$'s and $D$'s incomes is $1:2$,then the incomes of $A, B, C$ and $D$ are respectively (in ₹):

The incomes of $A$ and $B$ are in the ratio $3:2$ and their expenditures are in the ratio $5:3$. If each saves ₹ $1000$,then $A$'s income is (in ₹):