1. ## Ratio Problem

Hi everyone, sorry to be thick but I was wondering if somebody could answer me a simple question that I keep getting different answers to when trying to work out.

If there are 18 calories in 100ml bottle of squash, how many calories in 1.75 litres of the stuff?

2. ## Re: Stuck with simple question

Let's first convert 1.75 litres to ml. Simply multiply 1.75*1000 = 1750. Now set up a simple ratio:

18/100 = x/1750.

Cross multiply and divide:

100x=18*1750

x=18*1750/100=315 calories.

3. ## Re: Stuck with simple question

Originally Posted by carpediem
Hi everyone, sorry to be thick but I was wondering if somebody could answer me a simple question that I keep getting different answers to when trying to work out.

If there are 18 calories in 100ml bottle of squash, how many calories in 1.75 litres of the stuff?

Use a ratio:

100ml : 18cal
1750ml: x cal

We can divide each side of the ratio to give $\dfrac{x}{18} = \dfrac{1750}{100}$

Solve for x

4. ## Re: Stuck with simple question

Thankyou! Saved my day =]