R. D. Sharma Solutions for Chapter: Ratio and Proportion, Exercise 4: OBJECTIVE TYPE QUESTIONS

The boys and girls in a school are in the ratio $9:5.$ If the number of girls is $320,$ then the total strength of the school is
 

If the first three terms of a proportion are $3,5$ and $21$ respectively, then its fourth term is

What must be added to each term of the ratio $9:16$ to make the ratio $2:3$?

What least number is to be subtracted from each term of the ratio $15:19$ to make the ratio $3:4$?

If $₹840$ is divided between $P$ and $Q$ in the ratio $3: 4$, then $P\text{'}s$ share is
 

The ages of Ravish and Shikha are in the ratio $3:8$. Six years hence, their ages will be in the ratio $4:9$. The present age of Ravish is
 

The present ages of Renu and Ravi are in the ratio $5:6.$ The sum of their present ages is $44$ in years. The difference of their ages (in years) is
 

The third proportional of $3$ and $27$ is