Question

The sum of cora's age and rose's age is 40.Cora is 4 years older than rose.how old is cora?

Answer 1

let rose age be x
age of cora =x+4

according to the question.
rose age +cora age=40
x+x+4 =40
2x=40-4
2x=36
x=36/2=18

rose age =x=18 years
cora age =x+4=18+4=22 years

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Answer 2

Answer:

Age of Cora ⇒ 22 years

Step-by-step explanation:

Let the age of Rose be x years

Cora is 4 years elder than Rose

So let Cora's age be x + 4

Given, the sum of their ages is 40 years

According to the question,

x + x + 4 = 40

⇒ 2x + 4 = 40

⇒ 2x = 40 - 4

⇒ 2x = 36

⇒ x = 18

∴ Present age of Rose ⇒ x years

⇒ 18 years

∴ Present age of Cora ⇒ x + 4 years

⇒ 18 + 4

⇒ 22 years