Rose o kgetlile dithunya go tlatsa nkgo ya gagwe. O simolola ka go kgetla dithunya di le 3 tse di nang le dipetale di le 5 mo go nngwe le nngwe.  Morago ga foo o kgetla dithunya di le 4 tse di nang le dipetale di le 6 mo go nngwe le nngwe.  O bo o oketsa ka dithunya di le 5 tse di nang le dipetale di le 4 mo go nngwe le nngwe.  Kwa bofelong o kgetla dithunya di le 6 tse di nang le dipetale di le 7 mo go nngwe le nngwe.  Fa a ntse a rwala dithunya tse go di tshela mo nkgoing, o di wetsa e le nngwe mo mofuteng mongwe le mongwe mme phefo ya di fefola.  O tshela dithunya tse di setseng mo nkgoing.  Ke dipetale di le kae ka palo tse di mo dithunyeng tse di mo nkgoing?

In one year, the number of students on campus doubles at the end of every month. If there are 10 students on campus at the beginning of the year, how many additional students would have joined by the end of May, above and beyond the number of students already on campus at the beginning of the year?
Rose o kgetla dipetale di le 3*5=<<3*5=15>>15 tsa dithunya tsa dipetale di le 5.
Morago ga foo Rose o kgetla dipetale di le 4*6=<<4*6=24>>24 tsa dithunya tsa dipetale di le 6.
Morago ga foo Rose o kgetla dipetale di le 5*4=<<5*4=20>>20 tsa dithunya tsa dipetale di le 4.
Kwa bofelong, Rose o kgetla dipetale di le 6*7=<<6*7=42>>42 tsa dithunya tsa dipetale di le 7.
Rose o rwala dipetale di le 15+24+20+42=<<15+24+20+42=101>>101 tsa dithunya go ya kwa nkgoing.
Mme phefo e fefola dipetale di le 5+6+4+7=<<5+6+4+7=22>>22.
Ka jalo Rose o setse ka dipetale di le 101-22=<<101-22=79>>79.
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At the end of January, the number of students doubles to 2*10=<<2*10=20>>20
At the end of February, the number of students increases to 2*20=<<2*20=40>>40
By the end of March, the number of students doubles to 2*40=<<2*40=80>>80
By the end of April, the number of students is 2*80=<<2*80=160>>160
At the end of May, the number of students has doubled to 2*160=<<2*160=320>>320
If there were initially 10 students, 320-10=<<320-10=310>>310 students would join the campus by the end of May.
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