Amanda composed two songs. The longer song is 126 seconds less than twice the length of the short song. The longer song lasts 286 seconds. How long is the shorter song?
2007-12-05 08:05:49 · 5 answers · asked by kimchee_boi 3 in Science & Mathematics ➔ Mathematics
286+12=298
298/2=149
The shorter song is 149 seconds.
2007-12-05 08:09:52 · answer #1 · answered by Anonymous · 0⤊ 6⤋
let the longer song be of lenght x and shorter song of length y
2y-x = 126. - given
x = 286 - given
2y = 126+286
2y = 412
y=206
2007-12-05 08:14:20 · answer #2 · answered by c687stu 2 · 2⤊ 0⤋
(286+126)/2=206
2007-12-05 08:14:43 · answer #3 · answered by ? 3 · 1⤊ 0⤋
L = 2S - 126
L = 286
Substitute & solve for S:
286 = 2S - 126
286 + 126 = 2S
412 = 2S
S = 206 seconds
2007-12-05 08:11:09 · answer #4 · answered by Zandia 3 · 2⤊ 0⤋
let x be the length of the short song
length of long one is 2x - 126
2x -126 = 286
2x = 412
x = 206
2007-12-05 08:15:42 · answer #5 · answered by norman 7 · 0⤊ 0⤋