# Word Problems Lessons 00:12:36

### Age Problem 1

• Introduction to age problems. Shows how to use algebra to solve this age problem: Tim is 9 years ... 00:11:00

### Age Problem 2

• Shows how to use algebra to solve this age problem: Amy is 50 years older than Don. In 20 years, ... 00:07:48

### Hat and Scarf problem - 2 variables

• Shows how to solve a word problem using 2 variables and 2 linear equations. 00:11:47

### Percent Mixture #5 - 1 variable

• Solves this Percent Mixture word problem using one variable: Mary has some 1% fat milk and 4% fat... 00:10:34

### Percent Mixture #5 - 2 variables

• Solves this Percent Mixture word problem using two variables: Mary has some 1% fat milk and 4% fa... 00:12:12

### Percent Mixture #6 - 1 variable

• Solves this Percent Mixture word problem using one variable: A chemist has a 21% salt solution an... 00:12:00

### Percent Mixture #6 - 2 variables

• Solves this Percent Mixture word problem using two variables: A chemist has a 21% salt solution a... 00:10:45

### Phone problem - 2 variables

• Shows how to solve a word problem involving different rates for cell phone use using 2 variables ... 00:10:43

### Rate of current problem 1

• Shows how to solve a word problem involving the rate of a current and rowing in still water using... 00:07:58

### Rate of current problem 2

• Shows how to solve a word problem involving the rate of a current and rowing in still water using...