Respuesta :
Answer:
31/40 of the trail
Step-by-step explanation:
he completed 9/10 of the trail (or 72/80 because 9*8 is 72)
He went back 1/8 of the trail (or 10/80 because 1*10 is 10)
72-10 is 62
he went 62/80, simplified is 31/40 of the trail
Answer: 31/40 of the trail.
Step-by-step explanation:
At the start, he walked 9/10 of the trail.
Then, he backed 1/8 of the trail
The, the amount that he walked is:
d = 9/10 - 1/8
now, we must find a common multipler between 8 and 10, we know that 8*5 = 40 = 10*4
d = (4/4)*(9/10) - (5/5)*(1/8) = (4*9 - 5*1)/40 = (36 - 5)/40 = 31/40
So when he stops, he is at 31/40 of the trail.