63 is 90% of what number?

3 Answers
Mar 25, 2018

Let the number be x. Now,
rArr90% of x= 63

rArr90/100 xx x=63

rArr9x = 63 xx 10

rArr x= (63 xx 10)/9

rArr x=7 xx 10

rArr x= 70

Therefore, the value of x = 70.
Please let me know if it helped you or not, one way or the other:)

Mar 25, 2018

63 is 90% of 70.

Explanation:

First, translate the question into math.

Here's what I mean by that:

stackrel(63) overbrace("60") " " stackrel(=) overbrace("is") " " stackrel(90%) overbrace("90%") " " stackrel(xx) overbrace("of") " " stackrel(x) overbrace("what number") "?"

Now copy that equation and solve for x:

63=90%xxx

63=0.9xxx

63=9/10xxx

63color(blue)(xx10)=9/10xxxcolor(blue)(xx10)

63color(blue)(xx10)=9/color(red)cancelcolor(black)10xxxcolor(blue)(xxcolor(red)cancelcolor(blue)10)

63color(blue)(xx10)=9xxx

630=9xxx

color(blue)(color(black)630/9)=color(blue)(color(black)(9xxx)/9)

color(blue)(color(black)630/9)=color(blue)(color(black)(color(red)cancelcolor(black)9xxx)/color(red)cancelcolor(blue)9)

color(blue)(color(black)630/9)=x

70=x

That's the answer. Hope this helped!

Mar 25, 2018

70

Explanation:

70
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