The average age of 24 pupils is 15 years while the average age of 16 pupils is 14 years.What is average age of 40 pupils in a class?please i need anyone to help me
See my answer below.
14.5
To find the average age of 40 pupils in a class, you need to calculate the total sum of all their ages and divide it by the total number of pupils.
Given that the average age of 24 pupils is 15 years, you can multiply the average age by the number of pupils to find the total sum of their ages. In this case, 15 years multiplied by 24 pupils gives a total sum of 360 years.
Similarly, the average age of 16 pupils is 14 years. Multiplying the average age by the number of pupils gives a total sum of 224 years.
Now you have the sum of the ages for 24 pupils and the sum of the ages for 16 pupils. Adding these two sums together, 360 years plus 224 years equals 584 years.
To find the average age of 40 pupils, divide the total sum of their ages (584 years) by the total number of pupils (40).
Average Age = Total Sum of Ages / Number of Pupils
Average Age = 584 years / 40 pupils
Calculating this equation, you will find that the average age of 40 pupils in the class is 14.6 years.