PLZ HELP ME I will give you a medal for the BEST response. 70% of a number is 98.
What is 90% of that same number?
A.
63
B.
68.6
C.
88.2
D.
126
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Directrix (directrix):
70% of x = 98
.7*x = 98
x = 140
OpenStudy (amorfide):
if you want 70% of 35
you would do \[\frac{ 70(35) }{ 100 }\]
so if you want 70% of an unknown number and you know it is equal to 98
you can write this unknown number using a variable, we will use x
so you have
\[\frac{ 70x }{100 }\]
OpenStudy (amorfide):
\[\frac{ 70x }{ 100 }=98\]
OpenStudy (amorfide):
work out x, then you will do the same for 90% of the answer you get
Directrix (directrix):
Now, you do this to get the answer:
,9 * 140 = ?
Post what you get, okay? @rainbow_rocks03
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OpenStudy (amorfide):
so you get
98x100=70x
9800/70=x
x=140
90% of 140 is \[\frac{ 90(140) }{ 100 }\]