Answer:
At least 5 days
Step-by-step explanation:
400 miles per day / 1990 miles trip would take?
Cross multiplying gives;
= 4.975 days
Rounding off the answer to nearest day gives 5 days.
It would take 5 days
1990/400 is 4.975 round that it is 5 so 5 days
2/20
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
36 : x :: x : 16
16 x 36 = x2
576 = x2
Taking square root on both sides
24 = x