Terri o loga jeresi e e nang le matsogo a mabedi, molala, le sethunya sa mokgabiso. Mmele wa jeresi o tlhoka ditlhogo di le 900 go wediwa, molala o tlhoka nngwetharong ya palo eo ya ditlhogo, mme sethunya se tlhoka gabedi go feta molala. Jeresi yotlhe ke porojeke ya ditlhogo di le 1800. Ke ditlhogo di le kae tse matsogo a di tlhokang?

A mother goes shopping. She buys cocoa at $4.20, laundry at $9.45 and a package of pasta at $1.35. She pays $20. How much change does the cashier give back?
Molala o tlhoka 900 / 10 = <<900/10=90>>90 ditlhogo.
Sethunya se tlhoka 2 * 90 = <<2*90=180>>180 ditlhogo.
Mmele, molala, le sethunya mmogo di tlhoka 900 + 90 + 180 = <<900+90+180=1170>>1170 ditlhogo.
Ka jalo, matsogo a tlhoka 1800 - 1170 = <<1800-1170=630>>630 ditlhogo.
Ka jalo, letsogo lengwe le lengwe le tlhoka 630 / 2 = <<630/2=315>>315 ditlhogo.
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The total shopping cost is $4.2 + $9.45 + $1.35 = $<<4.2+9.45+1.35=15>>15.
The cashier gives back $20 - 1$5 = $<<20-15=5>>5.
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