3. Jessica drove 100 miles and then increased her speed by 30 mph for the following 200 miles. If the second part took 1 hour less than the first part,
what was her average speed?

its the fourth option

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

the answer is 375 miles

step-by-step explanation:

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!