?/48+15/?=18/72=?/96=21/?
2006-07-26 07:27:18 · 6 answers · asked by SFGiantsLuver 3 in Science & Mathematics ➔ Mathematics
ignore the + i meant for all of them to be equal signs
2006-07-26 07:30:24 · update #1
THIS IS EASY SINCE ALL OF THEM ARE EQUAL SIGNS, THEREFORE
A/48=18/72
A=12
AND 15/B=18/72
B=60
18/72=C/96
C=24
AND 18/72=21/D
D=84
2006-07-26 12:14:06 · answer #1 · answered by alandicho 5 · 0⤊ 0⤋
Cross Mulitply
12/48 = 15/60 = 18/72 = 24/96 = 21/84
2006-07-26 14:36:03 · answer #2 · answered by Jeff U 4 · 0⤊ 0⤋
18/72
Start by reducing the fraction 18/72. Divide top and bottom by 18 to get 1/4
?/96
Next, divide 4 into 96 to get 24 and that is the numerator 24/96
21/?
Use 1/4 again, 1/4 = 21/?, multiply 21 and 4 to get 84. 21/84
?/48+15/?= 1/4
Assume the denominator is the same 48
(?+15)/48 = 1/4
Divide 48 by 4 = 12 and subtract 15 = -3
final result:
-3/48 + 15/48 = 18/72 = 24/96 = 21/84
2006-07-26 14:56:50 · answer #3 · answered by Anonymous · 0⤊ 0⤋
12/48 15/60 18/72 24/96 21/84
the key is the 18/72...18 is 1/4 of 72.. so applying that ratio, you can figure out the rest.
2006-07-26 14:36:24 · answer #4 · answered by jk 5 · 0⤊ 0⤋
12 60 24 84 the 18/72=1/4=.25 then you cross multiply
2006-07-26 14:47:01 · answer #5 · answered by nc15male 2 · 0⤊ 0⤋
do you know how to work w/ proportions and how to cross multiply? i'll do the first one and you can do the rest...
if ?/48 = 18/72
treat ? as a unknown variable...so rewriting it (replacing ? w/ letter x)
x/48 = 18/72
cross multiply:
72x = 18(48)
72x = 864
divide both sides by 72...
x = 12
so the first ratio is 12/48
hope that helps!...good luck w/ the rest!!
2006-07-26 14:39:14 · answer #6 · answered by Apples 2 · 0⤊ 0⤋