Mo tirong ya sekolo, baithuti ba le masome a matlhano le bone ba tshwanetse go aroganngwa ka ditlhopha tse tshesane di le thataro. Fa tiro e tlhoka ditlhopha di le lesome le bobedi, go tlhokega ditlhopha di le kae gape?

A tomato vendor decides to switch who he buys his tomatoes for.  He sells 500 tomatoes a day.  He used to buy them for $.5 each but he gets a new vendor who sells them for $.4 each.  How much money does he save a week?
Go na le ditlhopha di le 54/6 = <<54/6=9>>9 tse di bopilweng go tswa mo baithuting ba le 54.
Jalo, go tlhokega ditlhopha di le 12 - 9 = <<12-9=3>>3 gape.
#### 3 

He buys 500*7=<<500*7=3500>>3500
He used to pay 3500*.5=$<<3500*.5=1750>>1750
He now pays 3500*.4=$<<3500*.4=1400>>1400
So he saves 1750-1400=$<<1750-1400=350>>350
#### 350