A company makes 130 bags.
28 of the bags have buttons but no zips.
33 of the bags have zips but no buttons.
49 of the bags have neither zips nor buttons.
How many bags have zips on them?
Answers
Step-by-step explanation:
A zipper, zip, fly, dingy, or zip fastener, formerly known as a clasp locker, is a commonly used device for binding the edges of an opening of fabric or other flexible material, such as on a garment or a bag. It is used in clothing (e.g., jackets and jeans), luggage and other bags, sporting goods, camping gear (e.g. tents and sleeping bags), and other items. Zippers come in all different sizes, shapes, and colors. Whitcomb L. Judson, who was an American inventor from Chicago, is sometimes given credit as the inventor of the zipper, but he never made a practical device. The method, still in use today, is based on interlocking teeth. Initially, it was titled the "hookless fastener" and was later redesigned to become more reliable.[1]
Answer:
53
Step-by-step explanation:
add everything you know together:
28 + 33 + 49 = 110
now that you have your answer subtract it from the number of bags
130- 110 = 20
the 20 is bags that have both zips and buttons,
you know that there are 33 bags with zips that's not your answer you need to add 20 to get to 53 because even though it has buttons as well it still has zips.
enjoy the answer :)