A train leaves Los Angeles at 20.m., heading north at 50mph. If the next train leaves three hours later and heads north at 60 mph, at what time will the second train catch up with the first

How is working backward similar to solving an equation?

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)