It takes mr. rose 10 hours to complete a printing job. his john can complete the same job in 15 hours. if mr. rose and john work together, how long will it take them to complete the job?

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

How do you write 600 as a product of its prime factors (index! )

Need solving this 2nd limit problem.