From points a and b, the distance between which is 1020 mi, two trains left simultaneously towards each other. the speed of one train was 10 mph greater than the speed of the other one. in 5 hours the trains had not met yet and were 170 mi apart. find the speed of the trains.

Julius went on a volunteer trip to centralamerica and took medical supplies with him.he packed a bag with 50 pounds of supplies.he brought pieces of equipment that weighed10 pounds each and bottles of medicine thatweighed pound each prepresents thenumber of pieces of equipment he broughtand b represents the number of bottles ofmedicine he brought then the total weight canbe represented by the equation 10p+b 50.the brought 3 pieces of equipment, how manybottles of medicine did he bring?