Question

Stephanie is 3 yrs older than andrew. Twelve years from now the sum of their ages will be 30 yrs more than Stephanie's age at present.

what expression represents the sum of their ages in 12 years?

Answer 1

Any ideas?

Answer 2

Let x = Stephanie's age.
Then x - 3 = Andrew's age.

Answer 3

30[(x+3)+7] = age of mary in 7 years?

Answer 4

Who is "mary"?

Answer 5

i mean lol stephanie

Answer 6

Why multiply by 30?

Answer 7

sorry I'm very confused right now

Answer 8

No problem, I will help you think through it...

Answer 9

Let x = Stephanie's age.
Then x - 3 = Andrew's age.

Twelve years from now the sum of their ages will be 30 yrs more than Stephanie's age at present.

Answer 10

How old will they be in 12 years?

Answer 11

x+3= 12 (stephanie)?

Answer 12

In 12 years:

x + 12= Stephanie's age.
Then x - 3 + 12 = Andrew's age.

Answer 13

Please don't give the answer away.

Answer 14

still confused here ;'(

Answer 15

sorry

Answer 16

Do you understand

Let x = Stephanie's age.
Then x - 3 = Andrew's age.

Answer 17

yes i understand that part

Answer 18

Andrew= x years old
Stephenie = x + 3
Sum of their age now = x+x+ 3
= 2x + 3
Sum of their ages in twelve years
2x +3 + 12 = 30+x+3
x=18

Answer 19

How about?

In 12 years:

x + 12= Stephanie's age.
Then x - 3 + 12 = Andrew's age.

Answer 20

Ahh I see

Answer 21

Good :)

Answer 22

Twelve years from now the sum of their ages will be 30 yrs more than Stephanie's age at present.

Answer 23

@bless What is the equation that represents the relationships among the numbers in the problem?

Answer 24

x+3+12
x+12

Answer 25

Twelve years from now the sum of their ages:

x + 12= Stephanie's age.
x - 3 + 12 = Andrew's age.

Answer 26

i got it :) thank u

Answer 27

x + 12 + x - 3 + 12 = 30 + x

Answer 28

Thanks for trying to learn.

Answer 29

:D