Question
The average age of a husband and a wife was 25 years
when they were married 4 years ago. The average age of the husband, the wife, and their child, who was born during the interval is 20 years now. How old is the child now?Solution
ATQ, Given that, 4yrs. back, the average age of a couple=25yrs. Then, the total==25×2yrs.=50yrs. After 4yrs. the sum will increase by 4×2yrs.=8yrs. Let the child's age=xyrs. Then the toal age of the family=(50+8+x)yrs=(58+x)yrs. Then, by the given condition, = (58+x)/3 =20 =58+x=60 = x = 2yrs
Who is the chairperson of the National Statistical Office?
In cricket, who is the men’s ICC Player of the Month for November?
What is the objective of the BharatNet project?
According to environmental initiatives in Bela Gram, approximately how many trees were planted during weddings and festivals as part of its climate acti...
Which state among those felicitated by NeGD onboarded 65% of its state services onto DigiLocker, benefiting over 1.92 crore citizens?
Which two new mechanisms did the UN General Assembly approve for AI governance as described in the briefing?
Which of the following international financial institution will provide a loan of USD 96.3 million for a project to provide safe drinking water sanitati...
Which of the following statements is/are CORRECT with respect to the report released by the Swiss Re Institute ?
I. According to a re...
Which state will host the Women’s Kabaddi World Cup 2025 in March?
Which technique was used to create 56,000 sq. meters of dense forests in Prayagraj in preparation for Mahakumbh 2025?
Relevant for Exams:
