Marissa o tsamaya mosepele wa dikilometara di le 12. O tsere ura e le nngwe go tsamaya dikilometara di le nne tsa ntlha, mme ura e nngwe go tsamaya dikilometara di le pedi tse di latelang. Fa a batla gore lobelo lwa gagwe lo nne dikilometara di le nne ka ura, o tshwanetse go tsamaya ka lobelo le le kana kang (ka dikilometara ka ura) go feta sekgala se se setseng?

Marissa is hiking a 12-mile trail. She took 1 hour to walk the first 4 miles, then another hour to walk the next two miles. If she wants her average speed to be 4 miles per hour, what speed (in miles per hour) does she need to walk the remaining distance?
Sa ntlha, bona gore go tsaya diura di le kae go tsamaya mosepele wa dikilometara di le 12 ka lobelo lwa dikilometara di le nne ka ura ka go arola sekgala ka lobelo: dikilometara di le 12 / dikilometara di le nne ka ura = <<12/4=3>>diura di le 3
Morago ga moo, ntsha nako e Marissa a setseng a e tsamaile go bona gore o saletswe ke nako e e kana kang: diura di le 3 - ura e le nngwe - ura e le nngwe = <<3-1-1=1>>ura e le nngwe
Jaanong bona gore o saletswe ke sekgala se se kana kang ka go ntsha sekgala se a setseng a se tsamaile mo sekgala sotlhe: dikilometara di le 12 - dikilometara di le nne - dikilometara di le pedi = <<12-4-2=6>> dikilometara di le 6
Jaanong arola sekgala se se setseng ka nako e e setseng go bona gore Marissa o tshwanetse go tsamaya ka lobelo le le kana kang ka ura: dikilometara di le 6 / ura e le nngwe = <<6/1=6>> dikilometara di le 6 ka ura
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First figure out how many hours it takes to hike a 12-mile trail at 4 mph by dividing the distance by the speed: 12 miles / 4 mph = <<12/4=3>>3 hours
Next subtract the time Marissa already spent walking to find out how much time she has left: 3 hours - 1 hour - 1 hour = <<3-1-1=1>>1 hour
Now figure out how much distance she has left by subtracting the distance she already traveled from the total distance: 12 miles - 4 miles - 2 miles = <<12-4-2=6>>6 miles
Now divide the remaining distance by the remaining time to find out how fast in miles per hour Marissa has to travel: 6 miles / 1 hour = <<6/1=6>>6 mph
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