Plz help me if u don't think my math question is too hard

luvya

Banned
Nov 19, 2001
3,161
2
0
One hour after Yolanda started walking from X to Y, a distance of 45 miles, Bob started walking along the same road from Y to X. If Yolanda's walking rate was 3 miles per hour and Bob's was 4 miles per hour, how many miles had Bob walked when they met?
The correct answer is 24...but why?:(
 

Turin39789

Lifer
Nov 21, 2000
12,219
8
81
she walked 3 already
so
42 = a(3) +a(4)
42=7a
a=5
so it took 6 hours for them to meet

bob was a(4)
6 hours * 4 mph = 24

is this your homework?
i need to go study triple integrals now
 

silverpig

Lifer
Jul 29, 2001
27,709
11
81
Originally posted by: Turin39789
she walked 3 already
so
42 = a(3) +a(4)
42=7a
a=5
so it took 6 hours for them to meet

bob was a(4)
6 hours * 4 mph = 24

is this your homework?
i need to go study triple integrals now

You had to learn that stuff at some point too... There's always someone doing something harder.