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Sagot :
Answer:
8 years and 32 years old
Step-by-step explanation:
Let x be the age of the mother now and y be the age of the daughter now then...
x=4y
4+x=3(y+4)
Note that in the second equation we are adding 4 because it says "in four years"
Simplify the second equation to get:
4+x=3(y)+3(4)
4+x=3y+12
Subtract 4 from both sides
x=3y+8
Solve using substitution (substitute 4y for x)
4y=3y+8
Subtract 3y from both sides
y=8
x=4(8)=32
The mother is 32 years old and her daughter is 8 years old
Answer:
daughter=8 and mom=32years
Step-by-step explanation:
m-------mom
d---------daughter
m=4d
m+4=3(D+4)
4d+4=3d+12
4d-3d=12-4
d=8 and m=4*8=32
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