Question

the average age of a
group of 5 students was
10. The average age
increased by 4 years when
2 new students joined the
group. What is the
average age of the two
new students who joined
the group?​

Answer 1

Answer:

24

Explanation:

Since the average age of a group of 5 students is 10, hence we can conclude that the total age of the 5 students is 10×5=50

However,after 2 new students joined the group,the average age increased by 4

So, newaverageage=10+4=14

The total number of students in a group is 7 after 2 new students joined in

So now we have to find the new total age of the 7 students and then minus it with the total age of the 5 students which is 50 in order to find their average age

So, total age for 7 people is= 7×14=98

So now we know that the total age at first was 50 but then after 2 new students join in,the total age became 98

So the 2 new students age is 98−50=48

And the average age of the 2 new students is 48÷2=24

Therefore the answer is 24:)

Hope it's helpful..