Math homework help! Solving Percent Problemsm with Porportions...?

[Jessica F]

#10

39 is 150% of what number?


#12

19 is 95% of what number???


Thank you
Also, if someone could show their work, because I understand most of this, just not this this, so could some math genius explain?

[calpal2001]

#10
39 / 150% = 39 / 1.5

#12
19 / 95% = 19 / .95

[jabetz1222]

39/1.50=26
19/.95=20
move dec point over 2 places

[ssullivan817]

is = %
____ _____
of 100

Ive used this for the longest time and it always works

so:

39 150%
____ X _____ =
x 100


39x100=3900
Xx150%=150X

3900/150X= 26

There for x is 26


same for the second question

19 X 95%
___ ____
x 100



1900/95x= 20

x=20

If you always use this you will always get it right
Hope this helped

[Ari]

this doesn't take geniusness, ha ha
see, the thing with word problems is you have to convert them in to simple math. the word is means =, and the word 'of' means *, and 'what number' means the unknown variable
so to convert and solve number 10)
39=150% *x
39=1.5x---in this step i made the percent into a decimal, and multiplied that times x
26=x------in this step i divided 39 by 1.5

you should be able to solve the other one yourself