0
Sarah is sixteen years old and four times as old as her brother How old will Sarah be when she is twice as old as her brother?
She will be 24.
S=16 (Sarah is 16 years old)
S=4B (Sarah is 4 times as old as her brother)
S/4=B
16/4=B
B=4 (Sarah's brother is 4 years old)
How old will Sarah be when she is twice as old as her brother?
S+Y=2(B+Y); S= Sarah's age, B= Sarah's Brother's age, Y=years passed
16+Y=2(4+Y)
16+Y=8+2Y
16=8+2Y-Y
16=8+Y
16-8=Y
8=Y (Sarah will be twice as old as her brother after 8 years pass)
How old is Sarah after 8 years pass?
S+Y=Final Answer
16+8=24
Checking work:
B+Y=4+8=12
Is 12 half of 24? Yes.
Therefore Sarah will be twice her brothers age when she is 24 and her brother will be 12.
-------------------
The keys here are
Sarah's age S = 16
Sarah's brother's age B = 16/4 = 4
Years that pass = T
The equation is
Sarah's future age is twice her brother's future age
16+T = 2 (4+T)
16+T = 8 +2T
16 = 8+2T - T
16 = 8 + T
8 = T
Sarah's future age = 16 + T = 24
What else can I help you with?
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 will be 24 and her brother will be 12 !
What is seven times the sum of twice a number and sixteen?
666
Krishna twelve years old is three times as old as his brother. How old will Krishna be when he is twice as old as his brother?
Krishna is 12 and three times as old as his brother, who must be 4. In 4 years time when Krishna is 16 he will be twice as old as his brother, who will then be 8.
John twelve years old is three times as old as his brother How old will John be when he is twice as old as his brother?
John will be 16.
Mike six years old is twice as old as his brother how old will mike be when he is one and half times as old as his brother?
9 years
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 will be 24 and her brother will be 12 !
What is seven times the sum of twice a number and sixteen?
666
How many times does 19 go in to 54?
Twice with a remainder of sixteen
How many times has Sarah robarts been married?
Sarah Robarts was divorced more than two years ago.
How many times does Antigone attempt to bury her brother?
twice
Krishna twelve years old is three times as old as his brother. How old will Krishna be when he is twice as old as his brother?
Krishna is 12 and three times as old as his brother, who must be 4. In 4 years time when Krishna is 16 he will be twice as old as his brother, who will then be 8.
Sarah age is three times Andy's age. 4 years from now Sarah will be twice as old as Andy. How old is Sarah now?
12 and 4 years later she will be 16
Marry who is 16 years old is 4 times as old as her brother how old will marry be is twice as old as her brother?
24
Sarah is twice as old as his youngest brother If the difference between their ages is 15 years How old is her youngest brother?
Sarah's age is 30 years right now. Her youngest brother's age is 15 years. --- Algebraically, this results from the equations where S is Sarah's age, x her brother's age : S=2x and S-x=15, where substitution provides 2x-x = 15 and x = 15.
John twelve years old is three times as old as his brother How old will John be when he is twice as old as his brother?
John will be 16.
. Mike six years old is twice as old as his brother. How old will Mike be when he is one and a half times as old as his brother?
9
How many times is Sarah mentioned in bible?
In the King James version the word - Sara - appears twice the word - Sarah - appears 38 times the word - Sarah's - appears 3 times the word - Sarai - appears 16 times the word - Sarai's - appears once (Sarai was the wife of Abram, before both their names were changed to Sarah and Abraham)
