Question

Solve this:
Q.6. How many seconds are there in $\frac{2}{5}$ of 2 hours.

Answer 1

$$\begin{gathered} \mathrm{We}\mathrm{know}\mathrm{that}, \\ 1\mathrm{hour}=3600\sec \\ 2\mathrm{hrs}=2\times 3600\sec =7200\sec \\ \mathrm{Now},\frac{2}{5}\mathrm{of}2\mathrm{hours}=\frac{2}{5}\times 7200=2880\sec \end{gathered}$$