Math
posted by BaBa .
Will someone please help me with the following problems:
1. One kilometer is equal to 1,000 meters. What fractional part of a kilometer is 750 meters? Simplify
2. Find the number that is the difference between 99 and 63.
3. Find the unit price for the item:$35.80 for 4 caps.
4. Add. 3 3/5 + 5 5/6 + 4 3/10
5.Talon reads 1,000 words in 5 minutes, and Samantha reads 525 words in 4 minutes. Who is the faster reader?
I really appreciate if you can help me out, Thanks.

1. 750/1000 = (reduce it to lowest terms)
2. 99  63 = ?
3. Divide 35.80 by 4
4. Convert all mixed numbers so that the fraction part has a common denominator. In this case the common denominator is 30. Then add the integers and the fractions separately.
3 18/30 + 5 25/30 + 4 10/30 = 12 53/30
= 13 23/30
5. Calculate and compare the words per minute of each. Note that Talon reads almost twice as much in only 25% more time. That should tell you the answer right away. 
Thank you very much