Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother? Mary, who is sixteen years old, is four times as old as her brother.

## Who is 16 years old is four times as old as her brother how old will Mary be when she is twice as old as her brother?

The correct answer is 24. Mary will be 24 years old when she is twice the age of her brother (which will be 12). So Mary is 16 and her brother is 4.

## Who is sixteen years old is four times as old as her brother?

Explanation: When Mary is 16 , her brother is 4 . Let x be the year when Mary will be twice as old as her brother.

## How old is Mary now?

Mary is 24 years old. Mary is twice as old as Anna was when Mary was as old as Anna is now .Solution.Present (is)Past (was)Mary24AAnnaA12

## What does four times as old as mean?

years old and her brother is four times younger which means the age of her brother when she is 16. is 4. . Now, i.e x be the year when Mary will be twice as old as her brother.

## What does twice as old mean?

3 adv If one thing is, for example, twice as big or old as another, the first thing is two times as big or old as the second. People sometimes say that one thing is twice as good or hard as another when they want to emphasize that the first thing is much better or harder than the second. ADV as adj/adv.

## What does it mean to be four times as old as someone?

years old and her brother is four times younger which means the age of her brother when she is 16. is 4. . Now, i.e x be the year when Mary will be twice as old as her brother.

## How old is diophantus?

So he married at the age of 26 and had a son who died at the age of 42, four years before Diophantus himself died aged 84. Based on this information we have given him a life span of 84 years.

## How do you respond to age word problems?

2:574:22Age Word Problems - MathHelp.com - Algebra Help - YouTubeYouTube

## What is the easiest way to solve age problems?

Important Statements and Equations for Problems based on Ages:If the present age is y, then n times the present age = ny.If the present age is x, then age n years later/hence = x + n.If the present age is x, then age n years ago = x – n.The ages in a ratio a: b will be ax and bx.More items

## How do you solve age problems?

Steps to Solve Age Word ProblemsExpress what we dont know as a variable.Create an equation based on the information provided.Solve for the unknown variable.Substitute our answer back into the equation to see if the left side of the equation equals the right side of the equation.7 Mar 2018

## What does twice as mean in math?

multiplication In math, twice means a multiplication of a quantity by two.

## Who found the zero?

mathematician Brahmagupta The first modern equivalent of numeral zero comes from a Hindu astronomer and mathematician Brahmagupta in 628. His symbol to depict the numeral was a dot underneath a number.

## How do you solve algebraic age problems?

2:574:22Age Word Problems - MathHelp.com - Algebra Help - YouTubeYouTube

## How do I calculate my father and son age?

If the age of a person is x, then n years after today, the age = x + n. Similarly, n years in the past, the age of this would have been x – n years. Answer: Suppose that the present age of the son is = x years. Then the fathers age is (60 -x) years.

## How do you calculate your age?

Let the daughters age be x and fathers age be 4x. So as per question, 4x + 5 = 3(x + 5). So x = 10. Hence present age of daughter is 10 years and present age of father is 40 years.

## What are age problems?

One application of linear equations is what are termed age problems. When solving age problems, generally the age of two different people (or objects) both now and in the future (or past) are compared. The objective of these problems is usually to find each subjects current age.

## What does 3 times as many mean in math?

If you earn X dollars, three times more than x means 3x + x -- more than means add. Three times as much means 3x. Yahooanswers.