Answer: 35
Explanation:
P(Tail) = 1/2
P(Tail) for 70 times = 1/2 x 70 = 35
Answer:
3 hours 26 minutes
Step-by-step explanation:
1/8 + 1/6 = 1/t where t is the required time in hours.
Multiply through by 24t:-
3t + 4t = 24
7t = 24
t = 3 3/7 hours
or 3 hours 26 minutes to the nearest minute.
50 I think. 2 1/2 times 20 minutes equals 50