Martha is twice as old as her younger brother. The sum oh their ages is 36. How old are they?
younger brother --- x years
Martha ----------- 2x years
x + 2x = 36
carry on
I think the brother is 12 and the sister is 24
12+24=36
Mokgadi is twice as old as her brother.The sum of their ages is 36.what are their ages?
To solve this problem, we can set up a system of equations using the given information. Let's use "M" to represent Martha's age and "B" to represent her younger brother's age.
1. From the given information, we know that Martha is twice as old as her younger brother: M = 2B.
2. We also know that the sum of their ages is 36: M + B = 36.
To solve this system, we can substitute the value of M from equation 1 into equation 2:
(2B) + B = 36
Combining like terms, we have:
3B = 36
Dividing both sides by 3, we get:
B = 12
Now that we know the younger brother's age, we can substitute this value back into one of the original equations to find Martha's age:
M = 2(12) = 24
Therefore, Martha is 24 years old and her younger brother is 12 years old.