My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

I know the answer, but can you figure it out?

AdamTaurus
Nov 13, 2017

#1**+3 **

you are 72 years old. I don't feel like details cause who needs them for puzzles, but you are 72 years old.

OfficialBubbleTanks
Nov 13, 2017

#2**+2 **

if you want to know how i answered so fast, ive heard it a million times from my friends, so i know it really well.

OfficialBubbleTanks
Nov 13, 2017

#3**+3 **

How about this one?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

AdamTaurus
Nov 13, 2017

#5**+2 **

Alexander is stranded on an island covered in forest.

One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, k i l l i n g the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alexander survive the fire? (There are no buckets or any other means to put out the fire)

AdamTaurus
Nov 13, 2017

#6**+2 **

he takes a piece of wood, sets fire to the eastern forest and camps among an area with no area for the fire to burn.

OfficialBubbleTanks
Nov 13, 2017

#7**+2 **

This is one of the hardest ones I've got.

Take 9 from 6, 10 from 9, 50 from 40 and leave 6.

How?

AdamTaurus
Nov 13, 2017

#8**+2 **

SIX - 9(IX)=S

9(IX)-10(X)=I

40(XL)-50(L)=X

S+I+X=6

that stumped me for a sec but i was doing latin homework XD

OfficialBubbleTanks
Nov 13, 2017

#10**+2 **

Here is a riddle of mine:

I always follow my brother, although very different we are. You can see him, but not me. You can hear me, but not him. What are we?

OfficialBubbleTanks
Nov 13, 2017

#11**+2 **

You are thunder and your brother is lightning. You can see lightning and hear thunder, and thunder always follows lightning.

AdamTaurus
Nov 13, 2017

#15**+2 **

yep! we all knew the truth about that city :P

What has keys but no locks, space but no room, and you can enter, but you cannot go in?

Edit: Lol i forgot a word XD

OfficialBubbleTanks
Nov 13, 2017

#14**+2 **

Here is one that will give you a headache:

A mother says to her daughter, "When I was your age, you were only 7. But when you become my age, I will be 88 years old. What is the present age of the mother and that of the daughter?

Guest Nov 13, 2017

edited by
Guest
Nov 13, 2017

#20**+2 **

A mother says to her daughter, "When I was your age, you were only 7. But when you become my age, I will be 88 years old. What is the present age of the mother and that of the daughter?

Let D be the daughter's current age

Let M be the mother's current age

Let the difference in their ages be = y

So M - D = y

And when the mother was the daughter's age......there was still a difference of y years in their ages and the daughter was 7......so......

D - y = 7

And when the daughter is her mother's age, the daughter will be D + y years old, but her mother will still be y years older and she will be 88

So

D + y + y = 88 or

D + 2y = 88

So...we have these three equations

M - D = y ⇒ D + y = M

D - y = 7 ⇒ y = D - 7

D + 2y = 88 ⇒ D + 2(D - 7) = 88 ⇒ 3D - 14 = 88 ⇒ 3D = 102 ⇒ D = 34

And y = D - 7 = 27

D + y = M = 61

So....the daughter is 34 and the mother is 61

CPhill
Nov 13, 2017

#21**+1 **

British Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead woman who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

Sherlock Holmes and John Watson entered the crime scene and easily able to solve the case.

How did the woman die?

AdamTaurus
Nov 13, 2017

#22**+1 **

She hung herself using ice slabs than the ice melted to form the puddle!

I have heard this one before

ilovepuppies1880
Nov 13, 2017

#23**+1 **

Three Guys at A Hotel Riddle

Three guys rent a hotel room for the night. When they get to the hotel they pay the $30 fee, then go up to their room. Soon the bellhop brings up their bags and gives the lawyers back $5 because the hotel was having a special discount that weekend. So the three lawyers decide to each keep one of the $5 dollars and to give the bellhop a $2 tip. However, when they sat down to tally up their expenses for the weekend the could not explain the following details:

Each one of them had originally paid $10 (towards the initial $30), then each got back $1 which meant that they each paid $9. Then they gave the bellhop a $2 tip. HOWEVER, 3 • $9 + $2 = $29

The guys couldn't figure out what happened to the other dollar. After all, the three paid out $30 but could only account for $29.

ilovepuppies1880
Nov 13, 2017

#24**+1 **

There are many ways of explaining/thinking about this riddle. It all boils down to the fact that the lawyers's math is incorrect.

They did NOT spend $9 • 3 + $2.

They spent exactly $27 dollars. $25 for the room and $2 for the tip. Remember they got exactly $3, in total back.

Another way to think about the answer to this riddle is to just pretend that the bellhop refunded $3 to the lawyers (rather than giving them $5 and receiving $2 back).

If the lawyers get $3 back and each takes $1. They they spent exactly $27 dollars.

AdamTaurus
Nov 13, 2017

#26**+1 **

No. I know this one. I can't believe you would accuse me of using google to get the answer for a riddle as simple as this!

AdamTaurus
Nov 13, 2017

#27**0 **

**G = years (Grandpa) G=Months(Grandson)=G/12 G/12*365 /(365/7)=Son's age in years. G + G/12 +[G/12*365 /(365/7)] =120, solve for G G=72 years - Grandpa's age 72 months / 12 = 6 Years - Grandson's age. So that: 120 - 72 - 6 =42 years - son's age. So that: 6 years x 365 days = 42 years x (365/7) weeks 2,190 days - grandson's age = 2,190 weeks - son's age**

Guest Nov 13, 2017

edited by
Guest
Nov 14, 2017

edited by Guest Nov 14, 2017

edited by Guest Nov 14, 2017