AP EAMCET Engineering 2018 Apr 23 Shift 1 Paper

The time taken for a calorimeter containing 75 g of water at 62 °C to cool to 58 °C is 9 minutes. When the calorimeter contains 105 g of water, it takes 12 minutes to cool horn 62 °C to 58 °C. The water equivalent of the calorimeter is_______