Challenger App

No.1 PSC Learning App

1M+ Downloads
4 years ago, the average age of the family of 5 members is 23 years. A baby is born now; the average age of the family is same as before. Find the age of the baby?

A7 years

B3 years

C9 years

D5 years

Answer:

B. 3 years

Read Explanation:

The total present age of the family of 5 members = (23*5) + (4*5) = 135 A baby is born now; the average age of the family is same as before. The total present age of the family of 6 members (Including the baby) = > 23*6 = 138 The age of the baby = 138 – 135 = 3 years


Related Questions:

The average age of 16 students in a college is 20. Out of them, the average age of 5 students is 20 and the average age of the other 10 students is 20.4. Find the age of the 16th college student.
What is the average of the prime numbers between 1 and 10?
Out of three numbers, the first is twice the second and is half of the third. If the average of the three numbers is 63, then difference of first and third numbers is:
അടുത്തടുത്ത നാല് ഇരട്ടസംഖ്യകളുടെ തുക 180 എങ്കിൽ അതിനു ശേഷം വരുന്ന അടുത്തടുത്ത നാല് ഇരട്ടസംഖ്യകളുടെ തുകയെന്ത് ?

The line graph given below represents the runs scored by Kohli and Sharma against 5 teams.What is the difference between the total runs scored by Kohli against the teams Q and R and total runs scored by Sharma against the teams Q and R?