A mass of 50g of water in a closed vessel, with surroundings at a constant temperature takes 2 minutes to cool from 30^° C to 25^° C. A mass of 100 g…

A mass of 50g of water in a closed vessel, with surroundings at a constant temperature takes $\displaystyle 2$ minutes to cool from $\displaystyle 30^{\circ} \mathrm{C}$ to $\displaystyle 25^{\circ} \mathrm{C}$. A mass of $\displaystyle 100$ g of another liquid in an identical vessel with identical surroundings takes the same time to cool from $\displaystyle 30^{\circ} \mathrm{C}$ to $\displaystyle 25^{\circ} \mathrm{C}$. The specific heat of the liquid is : (The water equivalent of the vessel is $\displaystyle 30$ g .)