Which is more economical: purchasing the economy size of a detergent at 5 kilograms for $5.15 or purchasing the regular size at 840 grams for 60cents

Regular size detergent.

Step-by-step explanation:

We have been given that the economy size of a detergent at 5 kilograms costs $5.15.

1 kg = 1000 grams,

5 kg = 5,000 grams.

$1 = 100 cents

$5 = 500 cents.

Since the cost per gram of regular size detergent is less than cost per gram of economy size detergent, therefore, regular size detergent is more economical.

the correct option is b

step-by-step explanation: