The average age of a couple married four years ago was 25 years then. The average age of the family consisting of husband, wife and a child now is 20 years. What is the child’s present age?
Let the age of father 4 years ago be X Let the age of mother 4 years ago be Y
The average age of a couple married four years ago was 25 years then.
So, (x + Y) ÷ 2 = 25 X + Y = 25 * 2 X + Y = 50 (eqn 1)
The average age of the family consisting of husband, wife and a child now is 20 years
Age of father after 4 years is then X + 4 Age of mother after 4 years is then Y + 4 Let age of child now be Z
So, ((X + 4) + (Y+4) + Z) ÷ 3 = 20 X + 4 + Y + 4 + Z = 20 * 3 X + Y + Z + 8 = 60 X + Y + Z = 60 - 8 X + Y + Z = 52 (eqn 2)
putting (eqn 1) into (eqn 2) 50 + Z = 52 Z = 52 - 50 Z = 2
The average age of a couple married four years ago was 25 years then. The average age of the family consisting of husband, wife and a child now is 20 years. What is the child’s present age?
Let the age of father 4 years ago be X Let the age of mother 4 years ago be Y
The average age of a couple married four years ago was 25 years then.
So, (x + Y) ÷ 2 = 25 X + Y = 25 * 2 X + Y = 50 (eqn 1)
The average age of the family consisting of husband, wife and a child now is 20 years
Age of father after 4 years is then X + 4 Age of mother after 4 years is then Y + 4 Let age of child now be Z
So, ((X + 4) + (Y+4) + Z) ÷ 3 = 20 X + 4 + Y + 4 + Z = 20 * 3 X + Y + Z + 8 = 60 X + Y + Z = 60 - 8 X + Y + Z = 52 (eqn 2)
putting (eqn 1) into (eqn 2) 50 + Z = 52 Z = 52 - 50 Z = 2
Answer: 2 years
BY Riddles Repository - Answers
Warning: Undefined variable $i in /var/www/tg-me/post.php on line 283
In general, many financial experts support their clients’ desire to buy cryptocurrency, but they don’t recommend it unless clients express interest. “The biggest concern for us is if someone wants to invest in crypto and the investment they choose doesn’t do well, and then all of a sudden they can’t send their kids to college,” says Ian Harvey, a certified financial planner (CFP) in New York City. “Then it wasn’t worth the risk.” The speculative nature of cryptocurrency leads some planners to recommend it for clients’ “side” investments. “Some call it a Vegas account,” says Scott Hammel, a CFP in Dallas. “Let’s keep this away from our real long-term perspective, make sure it doesn’t become too large a portion of your portfolio.” In a very real sense, Bitcoin is like a single stock, and advisors wouldn’t recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if you’re passionate about it. “If it was one stock, you would never allocate any significant portion of your portfolio to it,” Hammel says.
Telegram is riding high, adding tens of million of users this year. Now the bill is coming due.Telegram is one of the few significant social-media challengers to Facebook Inc., FB -1.90% on a trajectory toward one billion users active each month by the end of 2022, up from roughly 550 million today.