Disha Expert Team Solutions for Exercise 1: EXERCISE

$80\%$ of a number is equal to three-fifth of another number. What is the ratio between the first and the second number respectively?

The respective ratio between the present ages of father, mother and daughter is $7:6:2$. The difference between mother's and the daughter's age is $24$ years. What is the father's age at present?

$28\%$ members of a certain group are married. What is the respective ratio between the number of married members to the number of unmarried members?

The ratio of age of two boys is $5:6$. After two years the ratio will be $7:8$. The ratio of their ages after $12$ years will be_____.

A invests $\mathrm{Rs}.64000$ in a business. After a few months, B joined him with $\mathrm{Rs}.48000$. At the end of the year, the total profit was divided between them in the ratio $2:1$. After how many months did B join?

$\frac{\mathrm{a}}{3}=\frac{\mathrm{b}}{4}=\frac{\mathrm{c}}{7}$, then find $\frac{\left(\mathrm{a}+\mathrm{b}+\mathrm{c}\right)}{\mathrm{c}}$.

Area of a rectangular field is $3584 {\mathrm{m}}^2$ and the length and the breadth are in the ratio $7:2$ respectively. What is the perimeter of the rectangle? 

Present ages of father and son are in the ratio of $6 :1$ respectively. Four years later, the ratio of their ages will become $4:1$ respectively. What is the son's present age?