2007-11-06 11:20:53 · 18 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
78/x=65/100, cross-multiply: 65x=7800 and divide each side by 65.
2007-11-06 11:23:31 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Well... try 78 divided by .65 because 65% is .65.
so... 78 divide .65... you can change .65 into a fraction... 65/100 divided by 5= 13/20
78 divide 13/20...
you can do this by flipping 13/20 to 20/13 and changing divide to muliply.
78 x 20/13 or .65= 120
2007-11-06 11:36:21 · answer #2 · answered by ET 2 · 0⤊ 0⤋
78/65% = 78/0.65 = 120
You can double check it by taking 78/120 = 0.65x100 = 65%
2007-11-06 11:24:30 · answer #3 · answered by jemt113 2 · 0⤊ 0⤋
♦♦♦120.♦ ♦♦
cross multiply
65 78
100= X
100*78= 7800
65*X=65X
7800=65X
divide each by 65 to elimintate the x
7800/65=120
2007-11-06 11:25:35 · answer #4 · answered by Anonymous · 0⤊ 0⤋
78 divide by 65/100 <--0.65 is 120
2007-11-09 19:29:49 · answer #5 · answered by my life is a labyrinth 6 · 0⤊ 0⤋
120=78*.68
2007-11-06 11:28:03 · answer #6 · answered by tennis4bds 2 · 0⤊ 0⤋
OK - so what you are asking is:
x * .65 = 78; so
x = 78/.65
x = 120
Hope that helps.
2007-11-06 11:24:43 · answer #7 · answered by pyz01 7 · 0⤊ 0⤋
I learned a cool trick for solving these kinds of problems a few years back. It's a little mnemonic that goes:
is %
---- = ------
of 100
So for this particular question:
is= 78
%= 65
of= x
78/x = 65/100
65x = 7800
x = 120
Hope that helps!
2007-11-06 11:27:17 · answer #8 · answered by shadowstorm_14 2 · 0⤊ 0⤋
120
2007-11-06 11:54:39 · answer #9 · answered by kelly <3 4 · 0⤊ 0⤋
120
2007-11-06 11:23:17 · answer #10 · answered by David 4 · 0⤊ 0⤋