The rate of reaction $\mathrm{A}\to$ products is $10 \mathrm{mole}/$ $\mathrm{lit}/\min$ at time $\left({\mathrm{t}}_1\right)=2 \min$. What will be the rate in $\mathrm{mole}/\mathrm{lit}/\min$ at time $\left({\mathrm{t}}_2\right)-12 \min$