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every fourth customer at a store gets a free bumper sticker and every tenth customer gets a 10% discount out of the first 100 customers how many will recieve a bumper sticker and a 10% discount

a roll of wallpaper contains 50ft how many rolls of wallpaper will be needed to paper a wall 25 ft longvand 10 ft wide

2007-10-15 14:43:41 · 12 answers · asked by bossy_girl2320 1 in Science & Mathematics Mathematics

12 answers

Problem one:
okay so this is a ratio problem (or at least that's how I do it)
1/4 (one out of every four people) = ?/100 (how many people [?] out of 100)
you multiply 1 by 100 which equals 100 then divide my 4
that gives you 25 people that receive a bumper stickers out of 100 people
for the 10% discount you do:
1/10 (one out of every ten people) = ?/100 (how many people [?] out of one hundred)
so you multiply 1 by 100 and then divide by ten giving you 10 people out of 100 recieve a 10% discount
SO THE ANSWER IS:
25 people get bumper stickers and 10 people get the 10% off discount

Problem Two:
if you mean 50ft. SQUARED then this is what you do:
multiply 25 by 10 which is 250
then divided 250 by 50
you then get the answer: 5 rolls

hope i helped :)
-katie

2007-10-15 15:03:04 · answer #1 · answered by Katie 4 · 0 0

If you number the people from 1 through 100, the people who get a bumbersticker AND a discount are those that are multiples of 4 AND 10. The least common multiple of 4 and 10 is 20. So every 20th customer gets both: #20, #40, #60, #80, and #100. So five customers get both.

As for the second problem, this depends on how high the roll of wall paper is. You only gave one dimension. Did you mean to say that the wall paper covers fifty SQUARE feet? If that's the case then since you're trying to cover a (presumably) rectangular area that's 25 by 10, you need 250 square feet. So you need 250/50 = 5 rolls.

2007-10-15 14:47:56 · answer #2 · answered by Anonymous · 0 0

LCM of 4 & 10 is 20. So every 20th customer gets both.
100/20 = 5 customers get both

I assume the wallpaper cover 50 ft² not 50 ft.

25 ft x 10 ft = 250 ft²

250 ft² ÷ 50 ft²/roll = 5 rolls needed

2007-10-15 14:53:01 · answer #3 · answered by Marvin 4 · 0 0

for the first one: count how many 4's go into 100 and you have your answer for bumper stickers...next, count how many 10's go into 100, which is kinda easy. 10 goes into 100 ten times and 4 goes into 100 twenty five times

so 25 people get a bumper sticker and 10 people get the discount

for the second one: first, what is 25x10 then see how many times 50 goes into 250...so 5 rolls of wallpaper

2007-10-15 14:55:07 · answer #4 · answered by Anonymous · 0 0

You are looking for numbers up to 100,
which are exactly divisible by 4 & 10.
They are 20, 40, 60, 80, & 100.

Obviously the wall is 25 * 10 = 250 sq ft.
Presumably, you meant a roll is 50 sq ft.
Therefore 5 rolls are needed.

2007-10-15 14:53:51 · answer #5 · answered by Robert S 7 · 0 0

um for bumper sticker 25 and for discount is 10

you will need 5 50ft rolls of wallpaper

2007-10-15 14:49:04 · answer #6 · answered by Hippo 1 · 0 2

lcm of 4 and 10 is 20 so every 20th customer gets both.

25ft X 10ft = 250ft 50ft X 5ft = 250ft so five rolls.

2007-10-15 14:48:13 · answer #7 · answered by Keeping Watch in the Night 4 · 0 0

25 bumper stickers
10 discounts
5 get both

5 rolls

2007-10-15 14:47:59 · answer #8 · answered by dhere89 2 · 0 0

5 people get both

5 rolls of wallpaper

2007-10-15 14:48:40 · answer #9 · answered by brian_holinsworth1 2 · 0 0

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2016-12-29 12:12:28 · answer #10 · answered by fraccola 3 · 0 0

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