a tap supplies water at 26oC while another supplies water at 82oC. If a man wishes to bathe with water at 40oC the ratio of hot mass of hot water to that of cold water required is
-
1:3
- 3:1
- 3:7
- 7:3
- 15:8
The correct answer is: 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