There are 9 boys and 6 girls in a hall, each holding coins in their hand. The mean number of coins for the children is 18 The me
an number of coins for the boys is 14 Work out the mean number of coins for the girls.
1 answer:
Answer:
24
Step-by-step explanation:
Average = total number of coins / number of students
If the mean number of coins with boys is 14, the total number of coins held by boys = 14 x 9 = 126
The total number of coins held by the students = total number of children x average number of coins held by the children
15 x 18 = 270
The total number of coins held by girls = 270 - 126 =144
The mean number of coins for the girls = 144 / 6 = 24
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