Answer:
Ellen invested $60 and Bob invested $140
Step-by-step explanation:
let the two amounts invested by 3x and 7x
(notice 3x : 7x = 3 : 7 )
then 3x + 7x = 200
10x = 200
x = 20
then 3x = 3(20) = 60
and 7x = 7(20) = 140
60+140=200
Divide 250 miles by 17 mpg:
250 miles
-------------- = 14.7 gallons (absolute mininum). Go for 15 gallons.
17 mpg
Answer:
min: -10
max: 18
minmax
Step-by-step explanation:
