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A is 3 years older to B and 3 years younger to C, while B and D are twins. How many years older is C to D?
- a)2
- b)3
- c)6
- d)12
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A is 3 years older to B and 3 years younger to C, while B and D are tw...
Since B and D are twins, so B = D.
Now, A = B + 3 and A = C - 3.
Thus, B + 3 = C - 3 
D + 3 = C-3 
C - D = 6.
D + 3 = C-3 C - D = 6.Most Upvoted Answer
A is 3 years older to B and 3 years younger to C, while B and D are tw...
Let's break down the information given in the question step by step to find the answer.
1. A is 3 years older than B:
We can represent this as A = B + 3.
2. A is 3 years younger than C:
We can represent this as A = C - 3.
3. B and D are twins:
This means that B and D have the same age. Let's represent their age as X. So, B = X and D = X.
Now, let's use these equations to find the values of A, B, C, and D.
From equation 1, we have A = B + 3.
Substituting B with X, we get A = X + 3.
From equation 2, we have A = C - 3.
Substituting A with X + 3, we get X + 3 = C - 3.
Now, let's solve the equation to find the value of C.
X + 3 = C - 3
X + 3 + 3 = C
X + 6 = C
So, we have found that C is 6 years older than X.
Now, let's compare the ages of C and D to find the answer to the question.
C = X + 6
D = X
To find the age difference between C and D, we subtract the age of D from the age of C.
C - D = (X + 6) - X
C - D = 6
Therefore, C is 6 years older than D. So, the correct answer is option C) 6.
1. A is 3 years older than B:
We can represent this as A = B + 3.
2. A is 3 years younger than C:
We can represent this as A = C - 3.
3. B and D are twins:
This means that B and D have the same age. Let's represent their age as X. So, B = X and D = X.
Now, let's use these equations to find the values of A, B, C, and D.
From equation 1, we have A = B + 3.
Substituting B with X, we get A = X + 3.
From equation 2, we have A = C - 3.
Substituting A with X + 3, we get X + 3 = C - 3.
Now, let's solve the equation to find the value of C.
X + 3 = C - 3
X + 3 + 3 = C
X + 6 = C
So, we have found that C is 6 years older than X.
Now, let's compare the ages of C and D to find the answer to the question.
C = X + 6
D = X
To find the age difference between C and D, we subtract the age of D from the age of C.
C - D = (X + 6) - X
C - D = 6
Therefore, C is 6 years older than D. So, the correct answer is option C) 6.
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