Mokhaniki o lefisa dituelo tse di farologaneng go baakanya dithaere tsa dilori le dikoloi.  Go thaere nngwe le nngwe ya lori e e baakanngwang, mokhaniki o lefisa R60 mme go thaere nngwe le nngwe ya koloi e e baakanngwang, o lefisa R40.  Ka Labone, mokhaniki o baakanya dithaere tsa dilori di le 6 le dithaere tsa dikoloi di le 4.  Ka Labotlhano, mokhaniki o baakanya dithaere tsa dikoloi di le 12 mme ga a baakanye dithaere tsa dilori.  Mokhaniki o ne a amogela bokae ka letsatsi le a amogetseng madi a mantsi?

A mechanic charges different rates to repair the tires of trucks and cars.  For each truck tire that is repaired, the mechanic will charge $60 and for each car tire that is repaired, the mechanic will charge $40.  On Thursday, the mechanic repairs 6 truck tires and 4 car tires.  On Friday, the mechanic repairs 12 car tries and doesn't repair any truck tires.  How much more revenue did the mechanic earn on the day with higher revenue?
Ka Labone mokhaniki o lefisa palo yotlhe ya 6*60 + 4*40 = R<<6*60+4*40=520>>520.
Ka Labotlhano mokhaniki o lefisa palo yotlhe ya 12*40 = R<<12*40=480>>480.
Ka jalo, ka Labone, letsatsi le a amogetseng madi a mantsi, mokhaniki o ne a amogela R520-480 = R<<520-480=40>>40 go feta ka Labotlhano.
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On Thursday the mechanic charged a total of 6*60 + 4*40 = $<<6*60+4*40=520>>520.
On Friday the mechanic charged a total of 12*40 = $<<12*40=480>>480.
Thus, on Thursday, the day with higher revenue, the mechanic had 520-480 = $<<520-480=40>>40 more revenue than on Friday.
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