The average speed of a train that travels x miles in 3/4 hour

Average speed of train = 4x/3 miles per hour

Step-by-step explanation:

A train travels x miles in 3/4 hours

Let's find the distance train travels in 1 hour.

i.e distance travel in one hour = x /(3/4)

or distance travel in one hour = 4x/3

So,

Average speed of train = distance / time

Average speed of train =  ( 4x/3 / 1 )

Average speed of train = 4x/3 miles per hour

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6