Algebra - World Problems - Age Part 2/3

Word problems are challenging, but rewarding once you learn how they're done! Let's take a look at another word problem, this time we'll try a problem that deals with age:

Problem Text: A man is 6 years older than 3 times his son's age. Five years from now the sum of their ages will be 56. How old are they now?

[vikingwar]

Marcus and Dan decide to ride their bicycles around a circular track. At the start/finish line, both riders begin riding at the same time. If Marcus completes a lap every 42 seconds, and Dan completes a lap every 48 seconds, in how many minutes will Marcus and Dan cross the start/finish line at the same time?.... In order to solve it, it needs to be converted seconds into minutes in some way?

[vikingwar]

Hello professor. Tiffany earns 8 cents for every newspaper she delivers. Last week she used all of the money she saved from delivering newspapers to give a gift of $10.00 to each of her 2 brothers and 2 sisters. What is the least number of newspapers Tiffany could have delivered to give the gifts? The answer would be 125 newspapers? Can one apply the distribution property in this case? If so, how?

[tsoojbaterdene]

Students exchanged their pictures with each other and gave them as a gift.There were 812 pictures.How many students were there, Sir?

[broderickcamel]

how come x wouldn't be 10-5=5 since you used the equations dealing with the future?