How many grams of a liquid of specific heat \( 0.2 \) at a temperature \( 40^{\circ} \mathrm{C} ...

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How many grams of a liquid of specific heat \( 0.2 \) at a temperature \( 40^{\circ} \mathrm{C} \) must be mixed with \( 100 \mathrm{~g} \) of a liquid of specific heat of \( 0.5 \) at a temperature \( 20^{\circ} \mathrm{C} \), so that the final temperature of the mixture becomes \( 32^{\circ} \mathrm{C} \) [Pb. PET 1999]
(a) \( 175 \mathrm{~g} \)
(b) \( 300 \mathrm{~g} \)
(c) \( 295 \mathrm{~g} \)
(d) \( 375 \mathrm{~g} \)
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