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Started By
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Sunday morning math question
Posted on 8/12/18 at 9:37 am
Posted on 8/12/18 at 9:37 am
You have 100 lb of potatoes, which are 99 percent water by weight. You let them dehydrate until they're 98 percent water. How much do they weigh now?
Explain your answer.
Explain your answer.
Posted on 8/12/18 at 9:39 am to tonydtigr
50 lbs
Solution: I know things
Solution: I know things
This post was edited on 8/12/18 at 9:40 am
Posted on 8/12/18 at 9:42 am to tonydtigr
There is one pound of not water which is 1%. So if one pound is 2%, 1/(2%) = 50
Posted on 8/12/18 at 9:42 am to tonydtigr
This has more to do with biology than math. You aren't going to have a linear answer.
Posted on 8/12/18 at 9:44 am to tonydtigr
I have one for you. I raise up my hand with 4 fingers extended, then slowly pull back down the pinky, ring, and index finger, what does that leave?
Posted on 8/12/18 at 9:45 am to tonydtigr
0.99times100-0.98(100-x)=x
99-(98-0.98x)=x
99-98+0.98x=x
1+0.98x=x
1+0.98x-0.98x=x-0.98x
1=0.02x
1/0.02=0.02x/0.02
Which gives the lost water as 50=x
And the dehydrated weight of the potatoes as:
100-x=100-50=50
99-(98-0.98x)=x
99-98+0.98x=x
1+0.98x=x
1+0.98x-0.98x=x-0.98x
1=0.02x
1/0.02=0.02x/0.02
Which gives the lost water as 50=x
And the dehydrated weight of the potatoes as:
100-x=100-50=50
Posted on 8/12/18 at 9:45 am to tonydtigr
Why do you have so many potatoes
Posted on 8/12/18 at 9:46 am to tonydtigr
Where abouts Idaho are the potatoes coming from?
Posted on 8/12/18 at 9:47 am to tonydtigr
I should know this. My uncle is a potato farmer.
Posted on 8/12/18 at 9:48 am to tonydtigr
Someone’s been on reddit recently
Posted on 8/12/18 at 9:50 am to tonydtigr
quote:
You have 100 lb of potatoes, which are 99 percent water by weight.
Did you ever truly have 100lbs of potatoes?
Posted on 8/12/18 at 9:51 am to tonydtigr
1st page, and I'm pretty sure there's a dramatic weight loss...
like 50% or 49% weight loss (because it's starting off at 99)
like 50% or 49% weight loss (because it's starting off at 99)
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