A) 3.5
B) 11
C) 7
D) 10
Correct Answer: C
Solution :
In first case \[\frac{60-40}{7}=K\left[ \frac{60+40}{2}-10 \right]\] ?.(i) In second case \[\frac{40-28}{t}=K\left[ \frac{40+28}{2}-10 \right]\] ?.(ii) By solving \[t=7\]minutesYou need to login to perform this action.
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