Respuesta :

Multiply each fraction of the time(h) by 2/1
we have 1 hour = 2 miles

so miles    1/3     2/3       1       2      4
     time     1/6     1/3      1/2     1      2

see with time the first three times it went up by 1/6: 1/6 + 1/6 = 2/6 or 1/3 so if each 1/6 = 1/3 than 1/3 + 1/3 = 2/3

than 1/6 + 1/6 + 1/6 = 3/6 or 1/2 so 1/3 + 1/3 + 1/3 = 3/3 or 1 mile or take 2 x 1/2 = 1
you were given 1 hour = 2 mile, than for the 2 hour mark just take 2 hours times 2 miles (2 x 2 = 4)