Question

Four-fifth of a number is more than three-fourth of the number by 4. Find the number.

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{number}\mathrm{be}\mathrm{x}. \\ \mathrm{According}\mathrm{to}\mathrm{the}\mathrm{question}, \\ \frac{4}{5}\mathrm{x}-\frac{3}{4}\mathrm{x}=4 \\ \mathrm{or}\frac{16\mathrm{x}-15\mathrm{x}}{20}=4 \\ \mathrm{or}\mathrm{x}=80[\text{After}\text{c}\mathrm{ross}\mathrm{multipl}\text{ication}] \\ \mathrm{Thus},\mathrm{the}\mathrm{required}\mathrm{number}\mathrm{is}80. \end{gathered}$$