Physics

Problem

When 100 g of a liquid A at

100^\circ\text{C}

is added to 50 g of a liquid B at temperature

75^\circ\text{C}

, the temperature of the mixture becomes

90^\circ\text{C}

. The temperature of the mixture, if 100 g of liquid A at

100^\circ\text{C}

is added to 50 g of liquid B at

50^\circ\text{C}

, will be : a.

85^\circ\text{C}

60^\circ\text{C}

80^\circ\text{C}

70^\circ\text{C}