please help with mathematical equation

I used to know how to do this...maybe someone can just show me?

OK - I am trying to figure out:

If something is 350 calories per 100grams
then how many calories would it be if it were just 35grams?

I think the equation would go

If x/335 = 35/100, then x = ???

But I don't know how I solve that. I used to.

I am really really bad at math. Like failed the regents 4 times in HS bad. Went to summer school for it 3 times bad. I suck at it.

Thanks in advance.
Mary

let's just say that it's less that 350 calories

here's an easy way:

it is 350 calories fper 100 grams. so, divide
both by 100, & it is 3.5 calories per each gram.
so, if you have 35 grams, they are 35 calories each ( 3.5x35) =122.5

so 35 grams has 122.5 calories.
Does that make sense?

122.5
i did 350/100 is = to x/35
proportionally, i took it as calories over grams = calories over grams.

Never mind- looks like you've got it covered!

It's 122.5 calories.

The equation is:

350/100=x/35

100x=12250

x=122.5

You have to have the grams in the same place on each side of the equation.

I think it should go something like this:

If 350 is 100 grams (350/100) than what is 35 grams (x/35):

350/100 = x/35

(350*35)/100 = 122.5 calories is 35 grams

ETS: Looks like everyone had the same solution at the same time...lol

Thanks,

not sure why the grams have to be on one side though. but i'll trust you all!

mary

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Posted by Maribelle7777

I used to know how to do this...maybe someone can just show me?

OK - I am trying to figure out:

If something is 350 calories per 100grams
then how many calories would it be if it were just 35grams?

I think the equation would go

If x/335 = 35/100, then x = ???

But I don't know how I solve that. I used to.

I am really really bad at math. Like failed the regents 4 times in HS bad. Went to summer school for it 3 times bad. I suck at it.

Thanks in advance.
Mary

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for the future.. you cross multiply

x/335+ 35/100 =

35 * 335 = 100x

11725= 100x

11725/100= 100x/100

117.25= x

Edited to say, the math was right, but the #s you had were wrong, the proportion would be 350/100=x/35
then do the cross multiplication.
above is right :)