Question

Riyan is younger than Sarah by 5 years. The sum of their ages is 25. What is Sarah's age.​

Answer 1

Answer:

Here,

Sarah=x(let)

Riyan=x-5

Now,

x+(x-5)=25

or,2x-5=25

or,2x=25+5

or,x=30÷2

Therefore,x=15

So,

Age of Sarah=15

Age of Riyan=15-5

=10

Answer 2

Answer:

10 years

Step-by-step explanation:

Let Sarah age be x,

So, Riyan's age will be x+5.

Sum of their ages=25

Then, x+x+5=25

2x+5=25

2x=25-5

2x=20

x=20÷2

x=10 years

Therefore, Sarah age is 10 years.

Hope it helps...