Im confused i get a lot of numbers

If i go with numbers i think 190 grams better

190 grams cost 1.49 and 850 grams cost 6.99 .

Which is better and why .

get the unit price per g,

$1.49/190g = .0078...
$6.99/850 = .0082

I noticed that Henry2 found how much you get for your dollar,

while mine is how many does it cost per unit of mass.

In Canada, where I live, the unit price of most grocery items would
be expressed as cost/100 g.

The same is true when finding fuel efficiency of cars
In the US, it is expressed as "so many miles"/gallon, whereas
elsewhere it would be expressed as "how many litres"/100 km.

Just curious.

To determine which option is better, we need to compare the prices of the two options based on the quantity. In this case, we have two options: 190 grams for $1.49 and 850 grams for $6.99.

To find out which option is more cost-effective, we need to calculate the price per gram for both options. The formula to find the price per gram is:

Price per gram = Total price / Total quantity

For the first option (190 grams for $1.49):
Price per gram = $1.49 / 190 grams = $0.00784 per gram

For the second option (850 grams for $6.99):
Price per gram = $6.99 / 850 grams = $0.00822 per gram

Comparing the two options, we can see that the price per gram for the first option is $0.00784, and for the second option, it is $0.00822. As the price per gram for the first option is lower, it means that it is the more cost-effective option.

Therefore, the better option in terms of price is 190 grams for $1.49 because it has a lower price per gram.

190/1.49 = 127.5 grams/dollar.

850/6.99 = 121.6 grams/dollar.