Answer:
23. 2 ; 24. 1/10 ; 25. 3/2 ; 26.8 costumes ; 27. 3000 ft^2/hr ; 28. 3/125 ; 29. 31/400 ; 30.about 1/12 ; 31. see below
Step-by-step explanation:
Fractions in the form (a/b)/(c/d) can be also expressed as (a*d)/(b*c)
23.(1/2)/(1/4) = (1*4)/(2*1) = 4/2 =2
24.(1/12)/(5/6) = (1*6)/(12*5) = 6/60 = 1/10 or 0.1
25.(5/6)/(5/9) = (5*9)/(6*5) = 45/30 = 3/2 or 1.5
26. Divide the number of fabric she has to the number she needs to get in order to find out how many costumes Mrs. Frazier can make
6/0.75 or 6/(3/4) = (6*4)/(3*1) = 24/3 = 8 costumes
27. Same procedure, I recommend changing the mixed fraction to an improper
7500/(5/2) = (7500*2)/(5*1) = 15000/5 = 3000 ft^2/hr
28. 2 2/5% is 2.4% = 0.024 = 24/1000 = 3/125
29. 7 3/4% is 7.75% = 0.0775 = 775/10000 = 31/400
30. 8 1/3% is 8.33% = 0.0833333 = 8333/100000 = about 1/12 (use a calculator)
31. Convert into an improper fraction, then divided numerator by denominator to find the decimal counterpart. Convert percentage into decimal form and then into fraction form and simplify.
1 1/4 is 1.25% = 0.0125 = 125/10000 = 1/80
