Answer:
10
Step-by-step explanation:
Let c = sum of ages of all children.
mean age of all children = c/15 = 7
c = 15 * 7 = 105
The sum of the ages of all children is 105.
Let b = sum of ages of the 9 boys.
mean age of boys = b/9 = 5
b = 9 * 5 = 45
The sum of the ages of the boys is 45.
The sum of the ages of the girls is c - b.
c - b = 105 - 45 = 60
The number of girls is 15 - 9 = 6
mean age of girls = (sum of ages of the girls)/(number of girls) =
= 60/6 = 10
Ur answer is c.0.10 because 10 is less than all the other answer choices
47/100 and 47.00 are what I can think of.
The avarage is 180:18=10 , 10 min per hole
Answer:
25% of 50000 is 12500
Step-by-step explanation:
To find: 25% of 50000
solution:
25% = 
hence, 25% of 50000 = 
50000
= 12500
Therefore, the answer is 12500.
