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Simple question

This question is simple yet im having trouble figuring it out:

A large carton of orange juice contains 1.8L and is priced at £2.10
A small carton of range juice contains 1200ml and is priced at £1.25
Which size of carton offers better value for money?

Please show your working out.
Reply 1
Do you know how many ml are in a litre

You need to either do ml divided by pence ... this would give you the amount per penny so you would want the larger

Or you need to do pence/ml ... this would give you the cost per ml so you would want the smaller


The key is to be consistent (do the division the same way round) and then to realise that whatever you divide by is the "per" quantity
Reply 2
If you still need the working after reading TenOfThem's post (note that I did "per pound" instead of "per pence"):

Spoiler

(edited 11 years ago)
Reply 3
Original post by TwlilightLoz
This question is simple yet im having trouble figuring it out:

A large carton of orange juice contains 1.8L and is priced at £2.10
A small carton of range juice contains 1200ml and is priced at £1.25
Which size of carton offers better value for money?

Please show your working out.


Large carton:
1.8*1000= 1800ml
1800ml=£2.10
Divide both sides by 1800ml to work out price of 1ml juice in large carton:

1ml=£0.00116666666666666666666666666667

Small carton:
1200ml=£1.25
Divide both sides by 1200 to work out price of 1ml juice in small carton:

1ml=£0.00104166666666666666666666666667

Now as 1ml is cheaper with the small cartion, the small cartion's better value for money. :smile:

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