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# Maths question HELP!! watch

1. I'm so stuck on a question. I don't even know where to start:

Javid makes a large container of fruit juice by mixing orange juice and mango juice in the ratio 3:7
Orange juice costs £6 per 4 litres
Mango juice costs £5 per 10 litres
Javid sells his fruit juice in 2-litre bottles for £2 per bottle
Calculate how much profit he makes for each bottle he sells
2. (Original post by Livewire)
I'm so stuck on a question. I don't even know where to start:

Javid makes a large container of fruit juice by mixing orange juice and mango juice in the ratio 3:7
Orange juice costs £6 per 4 litres
Mango juice costs £5 per 10 litres
Javid sells his fruit juice in 2-litre bottles for £2 per bottle
Calculate how much profit he makes for each bottle he sells
You could multiply the cost of the OJ and the MJ according to the ratio you were given, and then convert that to a price per 2 litre. This is the cost, which you then can subtrqct from £2 to get the profit for each bottle.
Sorry if I gave too much of it away...
3. (Original post by Maivnek)
You could multiply the cost of the OJ and the MJ according to the ratio you were given, and then convert that to a price per 2 litre. This is the cost, which you then can subtrqct from £2 to get the profit for each bottle.
Sorry to be annoying but i still don't get it.

Do i do the £6 x 3 and £5 x 7 or is that wrong?
Then how would I convert that to the price per 2 litres and why would i subtract £2.

So sorry I'm beyond awful at maths!
4. (Original post by Maivnek)
You could multiply the cost of the OJ and the MJ according to the ratio you were given, and then convert that to a price per 2 litre. This is the cost, which you then can subtrqct from £2 to get the profit for each bottle.
Sorry if I gave too much of it away...
And does the fact that is says per 4 litres and per 10 litres matter?
5. (Original post by Livewire)
Sorry to be annoying but i still don't get it.

Do i do the £6 x 3 and £5 x 7 or is that wrong?
Then how would I convert that to the price per 2 litres and why would i subtract £2.

So sorry I'm beyond awful at maths!
Yeah, you're on the right track! If you multiply according to that ratio, that gives you a cost of the mixed juice. But the cost of how *much* juice? How many litres? What you then have is a total cost of £6*3 £5*7 per that many litres, right?

So now you just make it into a cost per 2 litres. Subtract that from the £2 per bottle and you got the profit.
6. (Original post by Maivnek)
Yeah, you're on the right track! If you multiply according to that ratio, that gives you a cost of the mixed juice. But the cost of how *much* juice? How many litres? What you then have is a total cost of £6*3 £5*7 per that many litres, right?

So now you just make it into a cost per 2 litres. Subtract that from the £2 per bottle and you got the profit.
Thank you so much!!
7. (Original post by Livewire)
Thank you so much!!
i made an edit, forgot a + sign.
8. You use the costs given to calculate the price per litre. So if 4ltrs of Orange juice costs £6 then 1ltr will cost £1.5.You do the same for the Mango juice. As they haven't given you how many litres Jason has made then you can chose a number. Since the ratio adds up to 10 the easiest number would be 10ltrs. That would mean 3 ltrs Orange mixed with 7ltrs Mango.You calculate the total cost of 10 litres. Since you are using 3 ltrs Orange @ £1.5 per litre you will be spending £4.5 on Orange. You do the same for Mango and add both. So 10ltrs will cost you £4.5 for the Orange juice plus £3.5 for the Mango (£8). 2 litre will cost £1.6 and so he will be making £0.40 per bottle ( assuming he doesn't have any overheads!)

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