Question

Which is more​ economical: purchasing the economy size of a detergent at 3 kilograms for ​$3.15 or purchasing the regular size at 750 grams for 60 cents​?

Answer 1

Explanation:

To determine which option is more economical, we need to compare the cost per gram of detergent for both the economy size and the regular size.

For the economy size: Price = $3.15 Quantity = 3 kilograms = 3,000 grams

Cost per gram = Price / Quantity = $3.15 / 3,000 grams ≈ $0.00105 per gram

For the regular size: Price = $0.60 Quantity = 750 grams

Cost per gram = Price / Quantity = $0.60 / 750 grams ≈ $0.0008 per gram

Now, we can compare the cost per gram for both options:

Economy size: $0.00105 per gram Regular size: $0.0008 per gram

As we can see, the cost per gram for the regular size detergent is lower ($0.0008) than the cost per gram for the economy size detergent ($0.00105). Therefore, purchasing the regular size at 750 grams for 60 cents is more economical.