Question 443214
Where did they start from? LA isn't that far away!
r*t=d
70*(t+2)=d
1.2*70*t=d
the distance will be the same so we set them equal
70*(t+2)=1.2*70*t
divide by 70
t+2=1.2t
subtract t
2=.2t
divide by 2
1=.1t
multiply by 10
10=t
check

70*12=1.2*70*10
70*12=12*70
ok
it took ten hours for the jones to catch the smiths. The smiths traveled 12 hours but the jones only 10
everything else is correct
the jones travelled at 84 mph