Question

Two groups of student, whose average ages are 20
years and 30 years, combine to form a third
group whose average age is 23 years. What is the
ratio of the number of students in the first group
to the number of students in the second group?
निकी औसत आय 20 वर्ष और 30 वर्ष है,​

Answer 1

Answer:

ratio is 2:3

Step-by-step explanation:

average of fst and 2nd group is 20 : 30

2:3