Question

Shaun is 4 years older than her sister Charmaine. If the sum of their ages is 16 how old is Charmaine?

A) 4 years old
B) 6 years old
C) 8 years old
D) 10 years old

Answer 1

Answer:6 years old

Explanation:

Answer 2

The answer is B) 6 years

Explanation:

First of all, build an equation. With the given problem, you can come up with:

s + c = 16

In which interprets that both their ages summed up are 16. Secondly,:

s = c + 4

After you will use the typical system of equations to solve. So, plug in the second equation to the first, where s will become c + 4, and the equation is now:

c + 4 + c = 16

And finally, solve for Charmaine's age.

2c + 4 = 16

-4 -4

-----------------

2c = 12

c = 6