SOLUTION: Answers for these http://www.eudoraschools.org/pages/uploaded_files/Math2%20WS3.5A.pdf please :)

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Question 706857: Answers for these http://www.eudoraschools.org/pages/uploaded_files/Math2%20WS3.5A.pdf please :)
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
1. 15 to 27 or 15%2F27=cross%2815%295%2Fcross%2827%299=5%2F9
so, 15 to 27 ratio is not in simplest form, simplest form is5 to 9

2. 7 to 18 or 7%2F18 is in simplest form because 7 and 18 have no common divisor
3. 11%2F55=cross%2811%291%2Fcross%2855%295=1%2F5
so, 11%2F55 ratio is not in simplest form, simplest form is1%2F5
4. 16 to 5 or 16%2F5 is in simplest form because 16 and 5 have no common divisor
5. 18 to 3 or 18%2F3=cross%2818%296%2Fcross%283%291=6%2F1
so, 18 to 3 ratio is not in simplest form, simplest form is6 to 1
6. 42 to 14 or 42%2F14=cross%2842%29cross%286%293%2Fcross%2814%29cross%282%291=3%2F1
so, 42 to 14 ratio is not in simplest form, simplest form is3 to 1
Solve the proportion:
7. 3%2F4=x%2F8....cross multiply
3%2A8=4x
24=4x
24%2F4=x
6=x
8. 1%2F5=m%2F30....cross multiply
1%2A30=5m
30=5m
30%2F5=m
6=m
9. 5%2F20=a%2F4....cross multiply
5%2A4=20a
20=20a
20%2F20=a
1=a
10, 11, 12, 13, 14, and 15 you can do yourself same way as I did 7,8, and 9
Match the sentence:
16. answer is B
17. answer is C
18. answer is A
19. Rainy days
a. rainy days ratio is 18%2F90=+cross%2818%292%2Fcross%2890%2910=cross%282%291%2Fcross%2810%295=1%2F5
b. if there was 18 rainy days, then 90-18=72 days with no rain
so, the ratio of the number of days it didn’t rain is:
72%2F90=cross%2872%294%2Fcross%2890%295=4%2F5
c.
rainy days:18
days it didn’t rain: 72
the ratio is: 18%2F72=cross%2818%291%2Fcross%2872%294=1%2F4
20.
a. ratio bean -tomato is 4%2F8=1%2F2
b. ratio tomato to bean and pepper is 8%2F%284%2B6%29=8%2F10=4%2F5
c.pepper to all plants 6%2F%284%2B6%2B8%29=6%2F18=2%2F3
21.
2 pg. in 30 min
x pg. in 180 min
2%2F30=x%2F180...cross multiply
2%2A180=30x
360=30x
360%2F30=x
12=x
22.
6 cards in 45 min
x cards in 120 min
6%2F45=x%2F120...cross multiply
6%2A120=45x
720=45x
720%2F45=x
16=x