trail mix is sold in 1 lbs bags Mary will buy trail mix and repackage it so that each of the 15 members of her hiking club gets 1 2/5 lbs bags. How many 1 lbs bags of trail mix should Mary buy to have enough trail mix without leftovers?
15 * 1.4 = ________ pounds
To solve this problem, we need to find out how much trail mix Mary needs to buy in total.
Each member of the hiking club needs a 1 2/5 lbs bag. To convert this mixed number to an improper fraction, we multiply the whole number (1) by the denominator (5) and add the numerator (2) to get the new numerator. The denominator remains the same. So, a 1 2/5 lbs bag can be written as (1 * 5 + 2)/5 = 7/5 lbs.
To find out how much trail mix Mary needs for the whole hiking club, we multiply the weight per person (7/5 lbs) by the number of members (15).
(7/5 lbs) * (15 members) = (7 * 15)/(5 * 1) = 105/5 = 21 lbs.
Since trail mix is sold in 1 lbs bags, Mary should buy 21 1 lbs bags to have enough trail mix without leftovers.