Question 906964
2*55=110
3*60=180
180-110=70
The chicken is 40 miles farther not 70 miles.
Either you gave the wrong information or the teacher is wrong

*t=d
r*2=d
(r+5)*3=d+40
3r+15=2r+40
r=25 mph for the duck
Now that is power walking!
r+5=30 mph for the chicken.
2*25=50 miles for the duck
3*30=90 miles for the chicken