Question

The sum of my age and my sisters age is 30, and she is 3 years less than twice as old as me. How old are each of us? HELP

Answer 1

Answer:

• 11 and 19

Step-by-step explanation:

• My age = m
• Sister's age = s

Equations:

• m + s = 30
• s = 2m - 3

Substitute s into first equation and solve for m:

• m + 2m - 3 = 30
• 3m - 3 = 30
• 3m = 33
• m = 11

Find s:

• s = 2*11 - 3 = 22 - 3 = 19

Answer 2

Answer:

2x - 3 + x = 24  <--- the sum of their ages is 30

 

3x - 3 = 30

 

3x = 33

 

x = 11

Step-by-step explanation:

HIS AGE IS 11

AND HIS SISTERS AGE IS 19

PLEASEEE GIVE ME BRAINLIEST