Question

Jamil traveled 210 miles, which is 70% of the total

distance to his grandfather's house. How many more
miles does he need to travel to reach his grandfather's
house?
(A 90 miles
C 300 miles
B 147 miles
D 390 miles
Kate chose B as the correct answer. How did she get
that answer?

Answer 1

a

Explanation:

1. find the total distance

`(100)/(70)`x210miles

this equals 300

2. subtract the total minus the distance completed

300-210

the answer: 90