i need help.

the answer is the ratio of 4:2:1.
A man makes a will and dies leaving his wife pregnant. His will disposes of 100 ecus such that if his wife has a daughter, the mother should take twice as much as the daughter, but if she has a son, he should have twice as much as the mother. [Sexist problem!] The mother gives birth to twins, a son and a daughter. How should the estate be split, respecting the father’s intentions?
Let S= son, W = wife, and D=daughter
S+D+W= 100
So S = 4W and D=2W
then 4w+2w+w= 100 ecus
7w=100
w= 14(2/7), my answer is not correct
and i got stuck. tell me what went wrong?/

s = 2 w

w = 2 d
so
s = 4 d
w = 2 d

4 d + 2 d + d = 100
7 d = 100
so
d = 100/7 (not the wife)

check
if d = 100/7
w = 200/7
and
s = 400/7

thank you damon.

You are welcome.

It seems like you made a mistake when setting up the equation to represent the father's intentions. Let's go through the problem again and correct the calculation step.

The father's intentions can be summarized as follows:
- If the wife has a daughter, the mother should take twice as much as the daughter.
- If the wife has a son, the son should have twice as much as the mother.

Let's assign variables to the amounts involved: S for the son, W for the wife, and D for the daughter.

From the given information, we can write the following equations to represent the father's intentions:
1. If the wife has a daughter: W = 2D
2. If the wife has a son: S = 2W

Now, let's set up an equation with the total estate:
S + W + D = 100

Since we have two unknowns (W and D), let's substitute the expressions for W and D from equations 1 and 2 into the total estate equation:

(2W) + W + (0.5W) = 100
Simplifying this equation, we get:
3.5W = 100

Now we can solve for W:
W = 100 / 3.5
W ≈ 28.57

However, since the problem states that the amount should be given in whole numbers, we need to consider this. We can round W to the nearest whole number:

W ≈ 29

Now, let's substitute this value back into the original equations to find the corresponding amounts for S and D:

S = 2W
S = 2 * 29
S = 58

D = W / 2
D = 29 / 2
D = 14.5

Since the problem states that the amounts should be whole numbers, we need to determine whether D should be rounded up or down. Given that we are dividing the amount equally between two children, it is customary to round to the nearest whole number. Therefore, we round 14.5 to 15.

Finally, the estate should be split as follows:
Son (S): 58 ecus
Wife (W): 29 ecus
Daughter (D): 15 ecus

I hope this explanation helps!