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Your daughter is twice as old as your son and half as old as you are In 22 years your son will be half your age So how old is your daughter?
To figure it out we need to set up algebraic equations relating everyone's current age:
x = Brother's age
2x = Sister's age
4x = Parent's age
Which means in 22 years:
x+22 (Brother)= (4x+22)(Parent)/2
Multiply both sides by 2
2x+44 =4x+22
Divide both sides by 2
x+22=2x+11
Subtract 11 from both sides
x+11 = 2x
Subtract x from both sides
11 = x
Mary is now 22 yrs old, her brother is 11, and her parent is 44 yrs old. In 22 years, her brother will be 33 and her parent will be 66, while Mary will be 44 yrs old.
What else can I help you with?
If a women is 21 and is half the age of her mom how old will the mom be when the women is 42?
63. If the daughter is 21 now and also half of her mom's age then her mom is now 42 yrs old. In 21 years her mom will be 63 (42 + 21).
If the father's age in 3 years will be twice the son's age 4 years ago and if the sum of their ages now is 106 how old is the father now?
He is 67.
Tom is twice as old as Sally's age when he was the age that Sally is now Tom is now 24 How old is Sally now According to the book the answer is 18 but we think the right answer should be 16?
Book answer: Tom now 24, Sally now 18 6 years ago Tom was 18 and Sally was 12 which is half Tom's present age. Book appears to be correct. Your answer: Tom now 24, Sally now 16 Eight years ago Tom was 16 and Sally was 8 which is half Tom's age THEN, not NOW.
Mary is twice as old as her brother and half as old as her father In 22 years her brother will be half as old as his father How old is Mary now?
Mary is now 22 yrs old, her brother is 11, and her father is 44 yrs old. In 22 years, her brother will be 33 and her father will be 66, while Mary will be 44 yrs old. To figure it out we need to set up algebraic equations relating everyone's current age: M (mary's age now) = 2*B (brother's age now) M = 1/2*F(father's age now) In 22 years from now, her brothers age will be half her father's age. So, B+22 = 1/2(F+22) We can use these equations to solve for everyone's age now. (1) Since Mary's age now is twice her brothers and half of her fathers we combine the first two equations to get: 2B = 1/2F or F=4B, so her father's age now is 4 times her brother's age now. (2) Using this equation and substitute the value for F in the equation which relates her brother's and father's ages 22 years from now and solve for her brother's age now. B + 22 = 1/2 (4B + 22) B + 22 = 2B + 11 B = 11, and F = 4*(11) = 44, and M=2*11=22
Erin's age is 3 times Warren's In 4 years she will be twice as old as he will be How old is each now?
Today: Erin's age is 3x and Warren's age is x Four years from now: Erin's age is 3x+4 and Warren's age is x+4 3x+4 = 2(x+4) 3x+4 = 2x+8 x = 4 Warren is four years old and Erin is twelve years old.
If mike is 6 years old and twice as old as his brother then how old will he be when he is one and a half his brothers age?
If Mike is 6 years old and twice as old as his brother, then his brother is 3 years old. When Mike is one and a half times his brother's age (1.5 * 3 = 4.5), he will be 4.5 years older than his brother. Therefore, Mike will be 6 + 4.5 = 10.5 years old when he is one and a half times his brother's age.
Lucy is nine years less than three times the age of her daughter Chloe. In five years she will be twice her daughter's age. How old is Chloe?
Chloe is 15 3 x 15 = 45 - 9 = 36 (moms current age) 15 +5 = 20 (Chloe's age in 5 years) 36 + 5 = 41 (mom's age in five years)
What is the age of a mineral that contains 25 percent parent and potassium 40 and argon 40 and 75 percent daughter and the half life potassium 40 is 1.25 billion years?
The age of the mineral can be estimated using the ratio of parent to daughter isotopes. With 25% parent (K40) and 75% daughter (Ar40), this would correspond to three half-lives since 25% is reduced by half three times to reach 75%. Given the half-life of K40 is 1.25 billion years, the age of the mineral would be approximately 3.75 billion years old.
Is Fernando Botero married?
Botero was twice married and twice divorced. He has a daughter. A son died at an early age.
The present age difference between the father and son is 26 years before 6 yrs fathers age was twice the age of the sons age and sons age was half the fathers age what are the present ages?
6 years ago, they were 26 and 52.Now they're 32 and 58.
My age equal 3 times my daughter age add to 4 times my son age There total age is 13 years find the age of my daughter and son if my age is 42 years?
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If the daughter is 21 and the mom is half her age how old would the mom be when the daughter is 42?
there is no daughter older then her mom "84"
How old is Ginny's daughter if Ginny is twice her daughter's age and next year Ginny age will be a perfect square?
Ginny's Daughter is 24. 48 is one less than 49, which is 7 squared.
Johan is twice as old as his sister Mary. Mary's age is 16 the age of her mother . Their mother is 30 How old are Johan and Mary?
johan is 10 and Mary is 5 i think, that's if the question was meaning 1/6 her mothers age not 16.
If a radioactive isotope in a rock has a half-life of 10000 years and the ratio of radioactive parent to stable daughter is 1 to 3 how old is the rock?
At the time the rock is created, the radioactive isotope is present in that rock in a ratio of 1 to zero with regard to the stable daughter. After one half-life, which is 10,000 years, the isotope to daughter ratio is 1 to 1. After another half-life, which is another 10,000 years, the ratio is 1 to 3. The rock is 20,000 years old.To see it another way, after the first half-life is complete, half the material is the original isotope, and half is the daughter. That's a 1 to 1 ratio. After another half-life (another 10,000 years) has passed, half the original isotope that was left has become the daughter. That's one quarter more of the daughter that will be added to the quantity of the daughter existing after the first half-life. That means that one quarter of the original isotope will be left after 2 half-lives, and the rest (the other 3/4ths of the material) will be the daughter. The ratio of the original isotope to the daughter after 2 half-lives (20,000 years) is 1 to 3.
Why are you half your age on mars?
Mars takes longer to rotate around the sun than Earth. Since it takes Mars almost twice as long as earth to make a rotation around the sun, you are half your age. Less rotations, less years
Eight years from now Eileen will be twice the age she was 6 years ago What is her present age?
she will be 20 years old
