Rong o ntse a boloka dipapetlana di le 20 mo koloing ya gagwe kgwedi le kgwedi. Neil o ntse a boloka dipapetlana tse dintsi go feta Rong ka makgetlo a le 2/5 kgwedi le kgwedi. Ba tla bo ba na le dipapetlana di le kae morago ga dingwaga di le lesome ba simolola go boloka?

John is very tired. He decides to take a nap, but he wants to finish his homework first. If John has 20 minutes of math homework, 40 minutes of reading homework, and 20 minutes of history homework and 3 hours before he has to eat dinner, how many minutes does John have to nap?
Neil o ntse a boloka dipapetlana tse dintsi go feta Rong ka makgetlo a le 2/5 kgwedi le kgwedi, palogotlhe ya 2/5*20 = <<2/5*20=8>>8 ya dipapetlana tse di oketsegileng.
Palogotlhe ya dipapetlana tse Neil a ntseng a di boloka mo koloing ya gagwe kgwedi le kgwedi ke 20+8 = <<20+8=28>>28 ya dipapetlana.
Fa Rong a ntse a boloka dipapetlana di le 20 kgwedi le kgwedi ka dingwaga di le lesome, palogotlhe ya dikgwedi tse a ntseng a boloka ka tsone ke 12*10 = <<12*10=120>>120 ya dikgwedi.
Ka go boloka dipapetlana di le 20 kgwedi le kgwedi ka dingwaga di le lesome, Rong o na le 20*120 = <<20*120=2400>>2400 ya dipapetlana mo koloing ya gagwe.
Fa Neil le ene a ntse a boloka ka dingwaga di le lesome, o bolokile 120*28 = <<120*28=3360>>3360 ya dipapetlana mo koloing ya gagwe.
Palogotlhe ya dipapetlana tse bobedi ba nang le tsone mo dikoloing tsa bone morago ga dingwaga di le lesome ba ntse ba boloka ke 3360+2400 = <<3360+2400=5760>>5760
#### 5760 

John has to spend 20+40+20 = <<20+40+20=80>>80 minutes on homework.
John has 3 hours*60 minutes= <<3*60=180>>180 minutes before dinner.
Thus, John has 180-80=<<180-80=100>>100 minutes for his nap.
#### 100