Marcus o leka go dira tshêtô ya gore a o tshwanetse go dira tiro ya gagwe ya sekolo. Go na le kgonagalo ya 50% ya gore ka moso a ka kopana le morutabana yo mongwe yo o ka seke a tsaya tiro ya sekolo. Le fa morutabana yo o tlwaelegileng a ka tla, go na le kgonagalo ya 40% ya gore a ka naya mongwe le mongwe tetla ya go tlisa tiro morago ga nako. Le fa tlelase yotlhe e sa fiwe tetla, go na le kgonagalo ya 20% ya gore Marcus a ka kgona go tlhatswega morutabana gore ntša ya gagwe e jele tiro ya gagwe mme a fiwe tetla ya gagwe. Ke kgonagalo efe ya gore Marcus a tshwanetse go tlisa tiro ya gagwe ka moso?

Tom buys a bedroom set for $3000.  He sells his old bedroom for $1000 and uses that to pay for part of the bedroom set.  He then has to pay 10% a month for the bedroom set.  How much does he have to pay per month?
Sa pele, bona kgonagalo ya gore morutabana yo o tlwaelegileng o tle ka go ntsha kgonagalo ya gore a se tle go 100%: 100% - 50% = 50%
Morago ga foo, bona kgonagalo ya gore morutabana a se ke a fa tlelase yotlhe tetla ya go tlisa tiro morago ga nako ka go ntsha kgonagalo ya gore a ba fe tetla go 100%: 100% - 40% = 60%
Morago ga foo, bona kgonagalo ya gore Marcus a se ke a kgona go bona tetla ya gagwe ka go ntsha kgonagalo ya gore a e bone go 100%: 100% - 20% = 80%
Jaanong bona kgonagalo ya gore morutabana a tle MME a se ke a fa tlelase yotlhe tetla ka go atisa dikgonagalo tse pedi tse di ikemetseng: .6 * .5 = <<.6*.5=.3>>.3
Jaanong atisa kgonagalo eo ka kgonagalo ya gore Marcus a se ke a kgona go bona tetla ya gagwe go bona kgonagalo ya gore a tshwanetse go tlisa tiro ya gagwe: .3 * .8 = <<.3*.8=.24>>.24
Kgabong, atisa kgonagalo ya decimal ka 100 go e tlhagisa jaaka peresente: .24 * 100% = <<.24*100=24>>24%
#### 24%

He has to pay 3000-1000=$<<3000-1000=2000>>2000
So he has to pay 2000*.1=$<<2000*.1=200>>200 per month
#### 200