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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?
Wiki User
∙ 11y ago
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
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∙ 11y ago
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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.
Mary is 5 years older than bob. If the sum of their ages is 39 write and solve an equation to find ages?
Their ages: x+5+x = 39 => 2x+5 = 39 => 2x = 39-5 => 2x = 34 => x = 17Therefore: Mary is 17+5 = 22 years and Bob is 17 years
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Acceptable, but a better sentence would be: This story describes the change of Alan's feelings towards Mary vividly.
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?
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Mary is 4 years old. [A+]
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How old will Mary be when she is twice as old as her brother?
This would depend on how old she was when he was born. For example if she was one year old when he was born, then at two years old she would be twice his age, If she was four at his birth, then when she is eight she will be twice his age. (See the related question which was the actual exercise.)
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On her father's side, Margaret Tudor, brother of Henry VIII
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Mary = 26 Susan = 18
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English. Yes, she had Spanish blood, but she answered to her father and later her brother, not the emperor.
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Mary and Anne Boyleyn's father died two years later after anne boylens execuition.
