Answer :
7 times as last weekend.
Step-by-step explanation:
Distance rode by Mr Morgan last week = 3 miles
Distance rode by Mr Morgan this week = 21 miles
We need to find how many times as many miles did Mr. Morgan ride his bike this weekend as last weekend.
Distance rode by Mr Morgan this week=k x Distance rode by Mr Morgan last week
21=k x 3
[tex]k=\frac{21}{3}=7[/tex]
7 times as last weekend.