Question

Mary and her mother walked at a constant rate of 3 miles per hour. Select the phrases from the drop-down menus to correctly complete the statement. At this constant rate, they should walk 1.8 miles in Choose(3/5 hour,1.2 hour,1 2/3 hour,5.4) and choose(1/6 mile,4/15 mile,2.2 mile,2.4 mile) in 4/5 hour.

Answer 1

3/5 hours

2,4 miles

Explanation:

v = 3 m/h (constant)

v = d/t

3 = 1,8/t

t = 1,8/3

`1,8 = 0,1 . 18\\t = (18 . 0,1)/(3) \\t = 6 . 0,01\\t = (6)/(10) = (3)/(5) hours`

`3 = (d)/((4)/(5) )`

d = 3 *
`(4)/(5)`

d =
`(12)/(5)` = 2,4 miles