Question

The salaries of A, B and C are in the ratio $1:3:4$. If the salaries are increased by $5$%, $10$% and $15$% respectively, then the increased salaries will be in the ratio:

• A. $20:66:95$
• B. $21:66:95$
• C. $21:66:92$
• D. $19:66:92$

Answer 1

The correct option is C $21:66:92$

Salary of $A,B$ and $C$ in ratio $1:3:4$.

Let the salary of $A$ is $Rs$ $100$ then the salaries of $B$ and $C$ are $Rs$ $300$ and $Rs$ $400$

The salary of $A$ increases by $5$ then salary of $A=100+(100\times \frac{5}{100})=Rs$ $105$

The salary of $B$ increases by $10$ then salary of $B=300+(300\times \frac{10}{100})=Rs$ $330$

The salary of $C$ increases by $15$ then salary of $C=400+(400\times$$\frac{15}{100}$)$=$ $Rs460$

Then new ratio of salary $A,B,$ and $C=105:330:460=21:66:92$