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 is the noun ? I went to the store with her.
can you help me understand this?  In the number 7,725, which places contain digits where one digit is ten times as great as the other?
Muslim scholars and theologians organized Islam's moral rules into the ____, or code of law.
Mercantilism vs free enterprise
There are 5631 of pens in a warehouse. Each box contains 92 pens. How many pens are there in total?
Music can help influence the mood or feeling in a place by the way in which it is played. What is a specific example of this that you have experienced? Discuss
(MC)What effect did Jim Crow laws have on Southern society?
The screen on briannas new phone is 2.85 centimeters long. what mixed number represents the length of the phone screen?
What is the first thing you should do if an accident occurs in your classroom? A. Find the emergency equipment. B.Notify your teacher. C.Go to the nearest hospi
Why did HARRIETT BEECHER STOWE'S UNCLE TOM'S CABIN INFURIATE THE SOUTH?