In 2 years, my sister will be twice as old as she was 2 years ago, and in 3 years my brother will be three times older than he was 3 years ago. Which sibling is older?

Sister

Step-by-step explanation:

Let the sister’s age be x.

Let the brother’s age be y.

2 + x = 2x - 2

3 + y = 3y - 3

Solve the first equation.

x - 2x = - 2 - 2

-x = -4

x = 4

Solve the second equation.

y - 3y = -3 - 3

-2y = -6

y = 3

The sister is 4 years old.

The brother is 3 years old.

The sister is older than the brother.

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: