Question

Shelly and Kristen share a birthday, but Shelly is 5 years older.

a. Make a table showing their ages every year, beginning when Kristen was born.
b. If Kristen is 16 years old, how old is Shelly?
c. If Kristen is K years old, how old is Shelly?
d. If Shelly is S years old, how old is Kristen?

Answer 1

Answer with Step-by-step explanation:

We are given that Shelly and Kristen share a birthday

Let x be the age of Kristen and y be the age of Shelly.

Age of Shelly=
`y=x+5`

a.We have to make a table showing ages of Shelly and Kristen.

Suppose, Kristen was born in year 2000.

x=0 then y=5

Now, the age of Shelly and Kristen increases by every year by 1.

b.If age of Kristen=16 years

We have to find the age of Shelly

Substitute x=16

`y=16+5=21` years

c.Age of Kristen =K years

We have to find the age of Shelly.

Substitute x=K

Then, we get

Age of Shelly=
`y=K+5` years

d.Age of Shelly=S years

We have to find the age of Kristen.

Substitute y=S then we get

`S=x+5`

`x=S-5`

Hence, age of Kristen=
`y=S-5` years

Answer 2

Answer with explanation:

Given : Shelly and Kristen share a birthday, but Shelly is 5 years older.

i.e. Age of Shelly = Age of Kristen +5

a. Table show their ages every year, beginning when Kristen was born. :

Kristen Shelly

0 5

1 6

2 7

3 8

4 9

b. If Kristen is 16 years old, then the age of Shelly = 16+5=21

c. If Kristen is K years old, then the age of Shelly = K+5

d. Also, age of Kristen = Age of Shelly - 5

If Shelly is S years old, then the age of Kristen = S-5