Kwa tlhabololwanela ya go batla matlotlo kwa kgaolong, go ne go tlhokega gore batho ba le 90 ba ikgaoganye ka ditlhopha gore tlhabololwanela e simolole. Go ba kgaoganya ka ditlhopha tse dinnye tse di nang le baeteledipele ba ba farologaneng, go ne ga dirwa ditlhopha tsa batho ba le 9. Fa e le gore 3/5 ya palo ya ditlhopha, leloko la tsone le ne le na le maloko a a tlisang dikgapetla tsa lewatle di le 2 mongwe le mongwe, ba ne ba tlisa dikgapetla di le kae?

John is raising money for a school trip. He has applied for help from the school, which has decided to cover half the cost of the trip. How much money is John missing if he has $50 and the trip costs $300?
E re ka palo yotlhe ya batho kwa tlhabololong e ne e le 90, ba ne ba dira ditlhopha di le 90/9=<<90/9=10>>10 morago ga go ikgaoganya ka ditlhopha tsa batho ba le 9.
Fa e le gore 3/5 ya palo ya ditlhopha, leloko la tsone le ne le na le maloko a a tlisang dikgapetla tsa lewatle di le 2 mongwe le mongwe, ke gore ditlhopha di le 3/5*10=<<3/5*10=6>>6 di ne di na le maloko a a tlisang dikgapetla tsa lewatle di le 2.
E re ka setlhopha sengwe le sengwe se ne se na le batho ba le 9, palo ya batho mo ditlhopheng tse 6, ba ba boneng dikgapetla tsa lewatle di le 2 mongwe le mongwe, e ne e le 6*9= <<6*9=54>>54.
Palo yotlhe ya dikgapetla tsa lewatle tse batho ba ba 54 ba di tlisitseng ke 54*2=<<54*2=108>>108 dikgapetla tsa lewatle. 
#### 108

John's school has decided to pay 300 / 2 = $<<300/2=150>>150 for his trip.
In total John has covered 150 + 50 = $<<150+50=200>>200 for his trip
Therefore, John needs 300 - 200 = $<<300-200=100>>100 more for the trip.
#### 100