A math problem

[DocDoBig]

You cheat if you scroll down to the solution!

A tricky but solvable math problem:

The mother is 21 years older than her child. In 6 years, the child will be 5 times younger than the mother. Question: Where was the father?

This problem is really mathematically and logically solved, even if it does not look like at first glance!

Please prove that you solved it with the calculation term!

[Hectororius]

In the Womb?

[Gameplay]

In the Womb?

yep the baby would be exactly -9months

let m = mother's age
let c = child's age

m = c + 21 Mother is 21 years older
c + 6 = (m + 6) / 5 In 6 years, the mother age will be 5x the child's

Let's get rid of the "c"

m = c + 21 -> c = m - 21

Substitute m - 21 for every c

(m - 21) + 6 = (m + 6) / 5

now, reduce and solve:

(m - 21) + 6 = m/5 + 6/5
m-15 = m/5 + 6/5
(4/5)m = 15 + 6/5
4m = 75 + 6
m = (81)/4 = 20.25

So
c = 20.25-21 = -0.75

That's -9 months!

[LEVEL ONE]

http://img2.wikia.nocookie.net/__cb20130615200235/trollpasta/images/1/10/If_you_know_what_I_mean.png

[Spymans]

confusing!

[Serancha]

Father is out at the pub.

[Spyce]

K I'm asian, let me solve it.


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[Friosaver]

Tyrones father is no where to be seen

[DocDoBig]

http://img2.wikia.nocookie.net/__cb20130615200235/trollpasta/images/1/10/If_you_know_what_I_mean.png

81917

[Sus]

yep the baby would be exactly -9months

let m = mother's age
let c = child's age

m = c + 21 Mother is 21 years older
c + 6 = (m + 6) / 5 In 6 years, the mother age will be 5x the child's

Let's get rid of the "c"

m = c + 21 -> c = m - 21

Substitute m - 21 for every c

(m - 21) + 6 = (m + 6) / 5

now, reduce and solve:

(m - 21) + 6 = m/5 + 6/5
m-15 = m/5 + 6/5
(4/5)m = 15 + 6/5
4m = 75 + 6
m = (81)/4 = 20.25

So
c = 20.25-21 = -0.75

That's -9 months!

Wow you're very intelligent!

Doc is this the good answer?

[DocDoBig]

Yes it is. :)
- 9 months is the baby old

[Sus]

Wheres the father tho????????

[Bless]

Yes it is. :)
- 9 months is the baby old "- 9 months is the baby old" wkwkwk

[DocDoBig]

Wheres the father tho????????

8310783105


(When the baby is minus 9 months old, you can easily guess where the father should be)

[Xenobiotic]

8310783105


(When the baby is minus 9 months old, you can easily guess where the father should be)

Dude..geez..


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[Sus]

I don't get it... did he take a hit and run??

[Reunegade]

In bed, feeling sick and puking liquid

[Xenobiotic]

If you don't get it..smh

[Sus]

the baby doesn't exist so there was no father?

[LEVEL ONE]

the baby doesn't exist so there was no father?

http://conceptiontips-story.com/wp-content/uploads/2011/05/getting_pregnant_conception_tips_image-300x229.jpg

[Xenobiotic]

http://conceptiontips-story.com/wp-content/uploads/2011/05/getting_pregnant_conception_tips_image-300x229.jpg

Le picture explains


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[coloneal]

hahahaha

[Hoardseeker]

Father is Six times Elder than the Child

[Sus]

HES ASKING wHERE IS THE FATHER NOT WHERE WAS THE FATHER

[Laar]

Actually "is" is correct. The "in 6 years" signifies that the child is not yet 5 times younger than than the mother, which means the present is when the mother and the father is in bed puking liquid, BUT if the question said "where was he father 6 years ago" and the present is when the child is 5 times younger than the mother, then "was" would be the correct word to use.