Mmaagwe Dean o mo file R28 go ya kwa lebenkeleng la dibaesekopo. Dean o rekile dikoloi tsa dibaesekopo di le 6 le dibera tse di boditse di le 5. Koloi nngwe le nngwe ya sebaesekopo e bitsa R2 mme bera nngwe le nngwe e e boditse e bitsa R1. Morago ga moo mmaagwe a ikutlwa a le pelotshwedo mme a swetsa ka go mo fa R10 e e oketsegileng. Go setse bokae mo go Dean?

Annabelle is saving for a phone that costs $400. She already has $80 in her savings. Her first job, where she earns $10 per hour, pays her for 20 hours of work. She is also paid for 15 hours of work at her second job, where she earns $5 an hour. In dollars, how much money does Annabelle still need to save?
Dikoloi tsa dibaesekopo di bitsa R2/koloi × dikoloi di le 6 = R<<6*2=12>>12.
Dibera tse di boditse di bitsa R1/bera × dibera di le 5 = R<<5*1=5>>5.
Ditshenyegelo tsa dibaesekopo tsotlhe ke R12 + R5 = R<<12+5=17>>17.
Fa re tlhakanya madi a mabedi a a mo filweng ke mmaagwe, re fitlhela gore Dean o na le R28 + R10 = R<<28+10=38>>38 go e dirisa.
Go setse R38 − R17 = R21 mo go Dean. 
#### 21 

Subtracting Annabelle’s initial savings shows that she still needs to save $400 – $80 = $<<400-80=320>>320.
From her first job, she earns $10 * 20 hours = $<<10*20=200>>200.
From her second job, she earns $5 * 15 hours = $<<5*15=75>>75.
She therefore still needs to save $320 – $200 – $75 = $<<320-200-75=45>>45.
#### 45