Setena sa moboteng se na le mebala e me ne e e farologaneng ya pente: bohibidu, bosweu, bo purple, le serolwana.  Go na le selekanyo se se lekanang sa pente e khibidu, e bosweu, le e purple mo seteneng.  Seripanyana sa setena ke serolwana.  Fa setena se dirisitse dipente di le 12 ka kakaretso, go dirisitswe dipente di le kae tse di khibidu? 

The red rope was four times the length of the blue rope. The blue rope was 7 centimeters shorter than the yellow rope. If the 3 ropes had a combined length of 37 centimeters, what was the length of the red rope in centimeters?
Seripanyana sa setena ke serolwana, ka jalo seripanyana se sengwe se dirisitse 12 / 2 = <<12/2=6>>6 ya dipente.
Setena se na le selekanyo se se lekanang sa mebala e mengwe e meraro, ka jalo se dirisitse 6 / 3 = <<6/3=2>>2 ya pente e khibidu.
#### 2 

Let Y = the length of the yellow rope in centimeters
Blue rope = Y - 7
Red rope = 4 * (Y - 7)
Y + Y - 7 + 4 (Y - 7) = 37 cm
6Y - 35 = 37
6Y = 72
Y = <<12=12>>12 cm
The red rope was 20 cm long.
#### 20