Question

A box contain 90 eggs in the eggs 2/3 are rotten than number of good eggs ​

Answer 1

$$\begin{gathered} \mathrm{Total}\mathrm{number}\mathrm{of}\mathrm{eggs}=90 \\ \mathrm{Number}\mathrm{of}\mathrm{rotten}\mathrm{eggs}=\frac{2}{3}\mathrm{of}90=\frac{2}{3}\times 90=60 \\ \mathrm{Number}\mathrm{of}\mathrm{good}\mathrm{eggs}=90-60=30 \end{gathered}$$