GK Expert Team Solutions for Exercise 1: OBJECTIVE TYPE QUESTIONS

If $a:b=3:5$, then find $\left(9a+4b\right):\left(5a+6b\right)$.

A and B are two alloys of gold and copper prepared by mixing metals in the ratio $7 : 2$ and $7 : 11$ respectively. If equal quantities of alloys are melted to form a third alloy C then the ratio of gold and copper in C is:

If $A:B=m:n$, $B:C = p:q$ and $C:D = r:s$, then $D:A$ is equal to:

If $A:B=2:3$, $B:C=5:7$, then $A:B:C$ is equal to:

$Rs.16000$ are to be distributed between B and A such that B gets $4000$ less than A. The ratio of the amount received by A to that received by B is:

The mean proportion between $72$ and $128$ is:

A sum of $Rs.2000$ is divided into two parts such that one part is invested at $10\%$ p.a. simple interest and the second part at $15\%$ p.a. simple interest. After $2$ years, if $Rs.460$ are received as interest, then the ratio of investments of first and second part is

Two cones have their heights in the ratio $1:3$ and the radii of their bases are in the ratio $3:1.$ The ratio of their volumes is: