Dad is 4 times as old as his son Jim. In 10 years, Dad's age will be 20 years more than twice Jim's age. How old is Jim?

10 years old
15 years old
30 years old

10??

Question

Dad is 4 times as old as his son Jim. In 10 years, Dad's age will be 20 years more than twice Jim's age. How old is Jim?


10 years old
15 years old
30 years old

10??

anonymous · Answer

D = 4J
D+10 = 2(10 + J) + 20

D = 30 + 2J

30 + 2J = 4J

J = 15

anonymous · Answer

Dad`s age now = y
Jim`s age now = x
Dad is 4 times as old as his son Jim so: 
4x=y
In ten years, Dads age will be twenty years more than twice Jims age. then 
y+10=2(x+10)+20 

then 
4x+10=2x+40
2x=30
x=15 and y=60

anonymous · Answer

do you understand?

anonymous · Answer

yesh thanks for explaing it

anonymous · Answer

you Are welcome. Any more questions

anonymous · Answer

?

anonymous · Answer

i should have more in the future thanks

anonymous · Answer

Ok. Happy to Help :D