Two trains, old steamy and chug-a-lug, are 290 miles apart from
each other and headed for the same station. they started toward the
station at 8: 00 a. m. if they are both set to arrive at 10: 30 a. m. and
old steamy is going 61.4 mph, how fast must chug-a-lug be going?
how far does old steamy have to travel?
miles
old steamy chug-a-lug
travel time 25 hours travel time 25 hours
travel distance
travel distance
travel speed 61.4 mph travel spreads
d = rt

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

answer: x=60