Joan has a cat called Tibber.

Every day Tibber is fed 2 sachets of wet food and 25 grams of dry food.
For some time, Joan has bought the cat food from the local pet shop where one box of
12 sachets costs £12.00 and one 400 gram packet of dry food costs £4.00.
Joan has now decided to buy all of the cat food from an online distributor.
Four boxes, each of 24 sachets of wet food, will cost £62.40, and one 2 kilogram packet of dry
food will cost £16.00.
How much money will Joan save each day on cat food when she buys it from the online
distributor rather than the local pet shop?

Each day, Tibber's food costs locally

2s(£12/12s) + 25g(£4/400g) = £2.25

Now do the same calculations for online food, and subtract.

Well, let's do the math!

In the local pet shop, Joan buys 12 sachets of wet food for £12.00. Since Tibber needs 2 sachets per day, one box will last for 6 days (12 sachets / 2 sachets per day).

So, Joan spends £12.00 every 6 days on wet food from the local pet shop.

Now, let's calculate how long the online distributor's cat food will last.

Four boxes, each with 24 sachets, will give a total of 96 sachets (4 boxes * 24 sachets per box). Since Tibber needs 2 sachets per day, these 96 sachets will last for 48 days (96 sachets / 2 sachets per day).

Joan spends £62.40 on 4 boxes of wet food from the online distributor, which will last for 48 days.

Now, let's calculate how much Joan spends on dry food.

In the local pet shop, one 400-gram packet of dry food costs £4.00. Joan feeds Tibber 25 grams of dry food per day, so this packet lasts for 16 days (400 grams / 25 grams per day).

Now, let's calculate how long the online distributor's dry food will last.

One 2-kilogram packet of dry food is equal to 2000 grams. With Tibber consuming 25 grams per day, this packet will last for 80 days (2000 grams / 25 grams per day).

Joan spends £16.00 on a 2-kilogram packet of dry food from the online distributor, which lasts for 80 days.

Now, let's calculate Joan's total daily expenses on cat food from both the local pet shop and the online distributor.

In the local pet shop:
Wet food: £12.00 every 6 days
Dry food: £4.00 every 16 days

In total, Joan spends (£12.00 / 6 days) + (£4.00 / 16 days) = £2.00 per day on cat food from the local pet shop.

From the online distributor:
Wet food: £62.40 every 48 days
Dry food: £16.00 every 80 days

In total, Joan spends (£62.40 / 48 days) + (£16.00 / 80 days) = £1.30 per day on cat food from the online distributor.

To calculate the daily savings, we subtract the amount Joan spends from the local pet shop from the amount she spends from the online distributor:

£2.00 - £1.30 = £0.70

Joan will save £0.70 per day on cat food when she buys it from the online distributor rather than the local pet shop.

Hope that helps, and hopefully Joan can use those savings to buy some fun toys for Tibber!

To calculate how much money Joan will save each day by buying cat food from the online distributor instead of the local pet shop, we need to compare the costs of the cat food from both sources.

First, let's calculate the cost of the cat food from the local pet shop:

- Wet food: Since Tibber is fed 2 sachets of wet food each day, the cost of one day's worth of wet food from the local pet shop is (12.00 / 12) * 2 = £2.00.
- Dry food: Tibber is fed 25 grams of dry food each day. The cost of one day's worth of dry food from the local pet shop is (4.00 / 400) * 25 = £0.25.

Now, let's calculate the cost of the cat food from the online distributor:

- Wet food: Four boxes of 24 sachets each will provide enough wet food for (4 * 24) = 96 days. The cost of one day's worth of wet food from the online distributor is (62.40 / 96) * 2 = £1.30.
- Dry food: One 2-kilogram packet of dry food will provide enough for (2 * 1000) / 25 = 80 days. The cost of one day's worth of dry food from the online distributor is (16.00 / 80) * 25 = £5.00.

To find the total savings per day, we subtract the total cost of cat food from the online distributor from the total cost from the local pet shop:

Total savings = (Wet food savings) + (Dry food savings)
= (£2.00 - £1.30) + (£0.25 - £5.00)
= £0.70 - £4.75
= -£4.05

Therefore, Joan will save £4.05 per day on cat food by buying it from the online distributor instead of the local pet shop.

To calculate how much money Joan will save each day on cat food, we need to determine the cost of the cat food from both the local pet shop and the online distributor.

First, let's calculate the daily cost of cat food from the local pet shop:

- Tibber is fed 2 sachets of wet food per day, so the cost of wet food per day from the local pet shop is (12 sachets / box) * (£12.00 / box) = £1.00 per sachet.
- The daily cost of wet food is then 2 sachets * £1.00/sachet = £2.00.
- Tibber is also fed 25 grams of dry food per day, so the cost of dry food per day from the local pet shop is (400 grams / £4.00) * 25 grams = £2.50.

Therefore, the total daily cost of cat food from the local pet shop is £2.00 + £2.50 = £4.50.

Now let's calculate the daily cost of cat food from the online distributor:

- The cost of wet food from the online distributor is (4 boxes * 24 sachets per box) / £62.40 = £2.40 per sachet.
- The daily cost of wet food is then 2 sachets * £2.40/sachet = £4.80.
- The cost of dry food from the online distributor is (2 kg / £16.00) * 25 grams = £3.13.

Therefore, the total daily cost of cat food from the online distributor is £4.80 + £3.13 = £7.93.

To calculate the amount Joan will save each day, we subtract the daily cost from the local pet shop (£4.50) from the daily cost from the online distributor (£7.93):

£7.93 - £4.50 = £3.43.

Therefore, Joan will save £3.43 each day on cat food when she buys it from the online distributor instead of the local pet shop.