from a point on a straight road, nico and anna ride bikes in the same direction. nico rides at 7 mph and anna rides 11 mph. in how many hours will they be 22 miles apart?

Question

anonymous · Answer

7 x 6 = 42.
11 x 6 = 66.
66 - 42 = 22.

So 6 hours

anonymous · Answer

where did the 11 x 6 come from?

anonymous · Answer

b/c anna is riding at 11 mph for 6 hours

anonymous · Answer

i mean how did u know it was 6 hours right from the beginning?

anonymous · Answer

Oh wow I made a mistake sorry. Its not 6 hours
Its actually 5.5 hours

anonymous · Answer

Let x=amount of hours.

11x-7x=22.
4x=22.
x=5.5

That's how you write it algebraic

anonymous · Answer

ooooh i see. ok i understand it that way. =)

anonymous · Answer

i meant