Answer:
Elga is 37 years old.
Step-by-step explanation:
Let 'x' be the age of elga.
Alvin's age is: x + 15
Given that the sum of their ages is 89, we have that:
x + 15 + x = 89
2x = 89 - 15
2x = 74
x = 74/2 = 37
Elga is 37 years old.
Answer:
Elga is 37 years old.
Step-by-step explanation:
Alvin (A) is 15 years older than Elga (E).
The sum their anges (A and E) is 89.
So the system we have is:
A=15+E
A+E=89
We are going to input 15+E for A in A+E=89 since first equation says A+15+E.
A+E=89 with A=15+E
(15+E)+E=89
15+E+E=89
15+2E=89
Subtract 15 on both sides:
2E=89-15
2E=74
Divide both sides by 2:
2E/2=74/2
E=74/2
E=37
Elga is 37 years old.
A=15+E=15+37=52 so Alvin is 52 yeard old.
52+37=89.
and
52=15+37.
