Wednesday

August 27, 2014

August 27, 2014

Posted by **Rosedala** on Monday, April 12, 2010 at 3:58pm.

One liter (1000 ml) per bottle, 12 in a box: $60 per box

OR:

Three quarter (750 ml) liter per bottle, 12 in a box: $40 per box

thank you so very much!

- Arithmetic -
**Ms. Sue**, Monday, April 12, 2010 at 4:24pm1,000 ml * 12 = ?

Divide 60 by the above number to get the cost per ml.

750 ml * 12 = ?

Divide 40 by the above number to get the cost per ml.

- Arithmetic -
**Rosedala**, Monday, April 12, 2010 at 4:58pmI'm sorry Ms. Sue, but I'm an arithmetic-challenged adult and my face is quite red:

I divided 60 by 1000 and got 0.06

Did the same with 40 and got 0.0533

How do I know which is cheaper since the 2nd one has less content (only 3/4 of liter as opposed to one full liter?

Please forgive my taking your time again, and thanks so very much! :o)

- Arithmetic -
**Ms. Sue**, Monday, April 12, 2010 at 5:05pm1000 * 12 is not 1000

1000 * 12 = 12,000

60/12,000 = $0.005 per ml.

The way to compare these is to find the cost per ml.

What is the cost per ml for the other box?

- Arithmetic -
**Rosedala**, Monday, April 12, 2010 at 5:17pmThank Ms. Sue!

I multiplied 750 x 12 = 9000

I divided 9000 by 12 = 0.00666

So...the smaller bottles are then more expensive despite the fact that the price tag is lower.

Thanks again a lot! :-)

- Arithmetic -
**Ms. Sue**, Monday, April 12, 2010 at 5:27pmWhy did you divide 9,000 by 12?

You need to divide 9,000 ml by the total cost.

- Arithmetic -
**Rosedala**, Monday, April 12, 2010 at 5:40pmOh I'm sorry (I'll never get this into my cerebrum!)...

The lower price tag is indeed cheaper. This time I got 0.00444. This makes it one tenth of a cent cheaper?

I'll write this little formula for my future purchases. Thank you so much!

- Arithmetic -
**Rachael**, Saturday, July 3, 2010 at 11:28am1 litre per bottle

**Related Questions**

science - suppose we have 10 liters of water in a 20 liter bucket and we ...

math - there are54 bottle caps in a box.Nicole has 8 bottle caps in a bag.Marvin...

science - How many mililiters are in 3.5 KL. There are a thousand ml per liter, ...

calculus - A company wants to bid on an order of 20,000 square based boxes which...

Calc - You are a lab technician and must create 250 ml of a 17% salt solution. ...

math - You are a lab technician and must create 250 ml of a 17% salt solution. ...

chemistry - Here's the problem: You need to make 300L of 2.25M perchloric acid. ...

Physical Science - 1. Which is faster,160 miles an hour or 300 inches a second? ...

Chemistry - How do I solve this: If a chemical reaction occurs at a rate of 2.25...

College Algebra - Staples recently charged $17.99 per box of Pilot Precise ...