aj673773
aj673773 aj673773
  • 11-01-2017
  • Mathematics
contestada

Devaughn is 5 years younger than Sydney. The sum of their ages is45. What is Sydney's age?

Respuesta :

Bishal1 Bishal1
  • 11-01-2017
Let the age of devaughn be x and Sydney be y.
Then,x+y=45
x+5=y
y=x+5
here,
put y=x+y in x+y=45
then,
x+y=45
x+x+5=45
2x=40
x=20
now,
y=x+5
y=20+5
y=25
Answer Link
Аноним Аноним
  • 11-01-2017
total age=45
devaughn is 5 years younger
45-5=40
so ,
40 divided by 2 equals= 20
so each of them is 20
without remaining 5
so devaughn is 20
so sydney is 45-20=25
so, sydney is 25 years old
Answer Link

Otras preguntas

what are three ways heat is transfered
f(x) = (x + 3)(x + 1)
A solution with a [H+] of 1.22x10-3M has a pH of _____________________.
The element phosphorus is manufactured from a mixture of phosphate rock (Ca3(PO4)2), sand (SiO2), and coke (C) in an electric furnace. The chemistry is complex
12 Men have walked on the moon on 6 different missions between 1969 and 1973 Who were the first people to walk on the moon? Nikita Pushkin and Yuri Gagarin Neil
In the 1980s, the US and Colombian governments worked together to stop the drug trade. What were the conditions of the agreement?
Please, I need help with this!! :(
In the equation 4+m =11 the first step to solving for m would be
Which Axis Power in WW II took over all of the French colonies in Southeast Asia?
Rewrite as a simplified fraction. 3.4888888888...... =?