Properties Of Matter

A body cools from \(80^{\circ} \mathrm{C}\) to \(60^{\circ} \mathrm{C}\) in 5 minutes. The temperature of the surrounding is \(20^{\circ} \mathrm{C}\). The time it takes to cool from \(60^{\circ} \mathrm{C}\) to \(40^{\circ} \mathrm{C}\) is :