Respuesta :
Answer:
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Step-by-step explanation:
The son’s age is unknown, so call it: X
The father’s age, four times older, so that means: 4*X= 4X (I use * for multiply)
After 16 years, we add 16 to both ages:
Son: X+16
Father: 4X+16, now, after 16yrs father’s age 2x older than son:
father→ 4X+16 = 2(X+16) = 2X+32 (father twice older than the son age)
4X +16= 2X+32 (after opening the brackets)
4X-2X= 32 - 16 ——-> we moved 2X to left, turned minus -, we moved 16 to the right turned minus -
2X = 16
X = 16/2 = 8
Son’s age is 8 yrs old
Father(Sunil) age is 4x8= 32
After 16 yrs, Father’s age twice older:
8+16=24 (son)
32+16= 48 (Father,Sunil, twice older than son)
Answer:
The son is 7 years old
The father is 28 years old
Step-by-step explanation:
f = fathers age
s = sons age
f = 4s
In 14 years ( so we add 14 to the age)
f+14 = 2(s+14)
We have 2 equations and 2 unknowns
Replace every f with 4s (from the first equation)
4s+14 =2(s+14)
Distribute the 2
4s+14 = 2s+28
Subtract 2s from each side
4s-2s+14 = 2s-2s+28
2s+14 = 28
Subtract 14 from each side
2s-14-14 = 28-14
2s = 14
Divide by 2
2s/2 =14/2
s =7
The son is 7 years old
Now lets calculate the fathers age
f =4s
f =4*7
f = 28
The father is 28 years old