Answer: 
Step-by-step explanation:
Given
Principal amount is 25,000
Time Period is 
Rate of interest 
Amount in compound interest is given by

Insert the values

Therefore,
must be paid back
If you know the answer to 50 x 4 = 200 then you can just add the other zeros
Answer:
108 minutes
Step-by-step explanation:
because 45/5=9 and 180/20=9 so multiply 12 by 9 12x9=108
There should not be a -5 outside of the parenthesis in the second line
Answer:
14.91288 miles
Step-by-step explanation:
We can use a proportion to solve this problem. Put the distance over the cost. We want our answer in miles so we need to convert 8 kilometers to miles. 1 km = .621371 miles
8 km * .621371 miles/ 1 km = 4.971 miles
4 .971 miles x miles
--------------------- = ------------------
10 dollars 30 dollars
Using cross products
4.971 * 30 = 10x
149.1288= 10 x
Divide by 10 on each side
149.1288/10= 10/10 x
14.91288 =x