Question

Sheri's age in 20 years will be the same as terry's age is now. ten years from now, terry's age will be twice sheri's. what are their present ages?

Answer 1

We have that

Sheri's age=x

terry's age=y

 in 20 years

x+20 =y   equation 1

 in 10 years

y+10=2*x   equation 2

 resolving

 y=x+20  equation 1

 y=2*x-10 equation 2

 x+20 =2*x-10

2*x-x=20+10

x=30

y=x+20--------------y=30+20=50

Sheri's age=x------------------30 years

terry's age=y-------------------50 years

Answer 2

Answer:

Sheri's age is 10 years old. Terry is 50 years old.

Explanation:

hope this helps :)