Current location - Training Enrollment Network - Mathematics courses - 250ml water 1.5 yuan, how much is it per ml? 400 ml water 2.2 yuan, how much is it per ml. 500 ml of water, how much is it per ml. (Mathematical problems)
250ml water 1.5 yuan, how much is it per ml? 400 ml water 2.2 yuan, how much is it per ml. 500 ml of water, how much is it per ml. (Mathematical problems)
Hello, landlord:

Each milliliter is the total amount of money ÷ the total amount of water = 1.5÷250.

=0.006 (yuan/ml)

400 ml 2.2 yuan: 2.2÷400=0.0055 (yuan/ml)

500 ml didn't give the total price!

If the unit price of 500 ml of water is the same as that of 250 ml of water, then 3 yuan =0.006 yuan/ml is needed.

If the unit price is 400 ml, it needs 2.75 yuan per ml =0.006875≈0.007 yuan /ml.