a tap supplies water at 26oC while another supplies water at 82oC. If a man...

WAEC 1991

a tap supplies water at 26^oC while another supplies water at 82^oC. If a man wishes to bathe with water at 40^oC the ratio of hot mass of hot water to that of cold water required is

A. 1:3
B. 3:1
C. 3:7
D. 7:3
E. 15:8

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Correct Answer: Option A

Explanation

heat supplied by hot water = heat gained by cold water M₁C(82 - 40) = M₂C(40 - 26)

\(\frac{M_2}{M_1}\)= \(\frac{14}{42}\)

= 1: 3

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a tap supplies water at 26oC while another supplies water at 82oC. If a man...

Correct Answer: Option A

Explanation

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