A tap supplies water at 30°C while another supplies at 86°C. If a man wishes to bath with water at 44°C, calculate the ratio of mass of hot water to that of cold water required
-
A.
1:3 -
B.
3:1 -
C.
3:7 -
D.
7:3 -
E.
15:8
Correct Answer: Option A
Explanation
(M_Hctheta_{H} = M_cctheta_c)
(M_h(86-44) = M_c(44-30)) thus giving 1:3