A survey of 150 families with four children was carried out in Sefwi Bibiani
to find the number of girls in each family.
The results were as follows.
Number of girls
0
Frequency
8
1
41
2.
55
3
33
4
13
Find the probability that a family with
four children will have
(a) two girls
(b) no girl
(c) one boy
(d) four boys​

a - base

b - exponent

so,

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours