Problem

Problem

Three liquids P, Q and R are given

4 \text{ kg}

of P at

60^\circ\text{C}

and

1 \text{ kg}

of R at

50^\circ\text{C}

when mixed produce a resultant temperature

55^\circ\text{C}

. A mixture of

1 \text{ kg}

of P at

60^\circ\text{C}

and

1 \text{ kg}

of Q at

50^\circ\text{C}

shows a temperature of

55^\circ\text{C}

. What will be the resulting temperature when

1 \text{ kg}

of Q at

60^\circ\text{C}

is mixed with

1 \text{ kg}

of R at

50^\circ\text{C}

?

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