http://www.ikea.com/us/en/catalog/products/70152467/
You estimate that you can do 12 math problems in 45 min. How long should it take you to do 20 math problems?
Let x be the minute for 20 question.
Word ratio, Ratio tables, find x
Mins Math problem 12(x) = 45(20)
45 12 12 x/12 = 900/12
x 20 X = 75 min.
It take 75 mins to do 20 math Problems.
http://blog.deezer.com/nl/deezer-music-poster-factory/
Three poster cost $9.60. At the rate how many posters can you buy for $48?
Let x be the number of poster that cost $48
Word ratio, Ratio tables, find X
Poster $ 9.60(x) = 3(48)
3 9.60 9.60 x/9.60= 144/9.60
X 48 X = 15 posters
You can buy 15 posters for $48.
which cost more per issue an 18 issue subscription for $40.50 or a 12 issue subscription for $33.60?
Answer for your question:
ReplyDelete~Issue that cost more is the 12 subscription issue because:
12•x = 33.60•1
12x = 33. 60
12 12
x=2.80
While the other one is cheaper:
18•x = 40.50•1
18x = 40.50
18 18
x=2.25
Justine how did you answer it with dots?
ReplyDelete