hayleydouglas0
hayleydouglas0 hayleydouglas0
  • 17-11-2017
  • Mathematics
contestada

Keith is thirteen years older than nephew William. In four years Keith will be twice as old as William. How old is William now?

Respuesta :

redgamer821
redgamer821 redgamer821
  • 17-11-2017
William is 24 years old. (I think)
Answer Link
ralucaflorea
ralucaflorea ralucaflorea
  • 17-11-2017
Let's call Keith x and William y
x=13+y

4+x=2y

substitute x with 13+y:
4+(13+y)=2y
17+y=2y
17=y

William is 17 years old
Answer Link

Otras preguntas

Which function shows the final number of tires, y, produced by two of each machine working for x number of hours? y = 55x – 1 y = 57x – 3 y = 110x – 2 y = 114x
construa o gráfico de y=2x-8
which one should i pick?
Babies with very low or very high birthweight are less likely to survive observe a graph of the data
Number 9 please. I need help
It is important to vary your reading style whenever _____.
What is used to join some compound words and numbers? apostrophe comma hyphen parentheses quotation marks
what was Japan's strategy for attacking the american naval base at Pearl Harbor? A. To take over the islands of Hawaii for fueling stops B. To take the Hawaiian
How do you figure out Unit Conversions?
Which is the graph of x≤2