Question #14004

2 Answers
Jan 19, 2018

#2 1/2#miles in half an hour and #12 1/2#miles in #2 1/2# hours

Explanation:

Malia runs 5 miles in 1 hour.

So, she must be running #5# x #1/2# miles in #1/2# an hour.
that's #5# x #1/2# miles
#2 1/2#miles

and also, she must be running #5# x #2 1/2# miles in #2 1/2# hours
that's #5# x #5/2# miles
#=25/2# miles
#=12 1/2#miles :)

-Sahar.

Jan 19, 2018

See below

Explanation:

Use the unitary method

Distance covered in 1 hour= 5 miles
Distance covered in #1/2# hour= #5/2#
= 2.5 miles
Distance covered in 2#1/2# hours = #5*2 1/2#
= #5*5/2#
= #25/2#
= 12.5 miles