Jose and Sachiko leave Sacramento driving in opposite directions. Jose drives five miles per hour faster than Sachiko. In four hours they are 476 miles apart. How fast is each person traveling?
write the equation. and esplain how you got the answer.
2006-11-06 11:10:53 · 3 answers · asked by dorkified at heart 1 in Science & Mathematics ➔ Mathematics
They travelled a total of 476 miles in 4 hours. So together they are travelling (476/4) mph or 119 mph.
So you have two equations:
J + S = 119
J - S = 5
2J = 124
J = 62 mph
S = 57 mph
2006-11-06 11:31:47 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
d=rt
s=sachiko
476=4s+ 4(s+5)
476=4s+4s+20
456=8s
s=57
sanchiko=57, jose=62
it did this by making a chart with problem. if you want to use a chart here's the info:
2 rows, one ofr jose and another for san..
3 columns: rate, time, rate * time
and just fill it in for each person.
2006-11-08 20:48:30 · answer #2 · answered by ~Z. 4 · 0⤊ 0⤋
d=rt
476 = 4r + 4 (r+5)
476 = 8r +20
456 = 8r
r = 57
Sachiko 57mph
Jose 62 mph
2006-11-06 19:15:06 · answer #3 · answered by MollyMAM 6 · 1⤊ 0⤋