The speed of a train is 60 miles per hour. in 2 hours, the train will cover miles, in 4 hours, the train will cover miles. the train covered more miles in 4 hours than it did in 2 hours.

The train is going 60 miles per hour

In 2 hours

60 * 2 = ?

In 4 hours

60 * 4 = ?

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation:

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