Debra o tlhokometse ntlo ya dinotshe go bona gore di tsena le go tswa go le kae mo letsatsing. O bone dinotshe di le 30 di tswa mo ntlong mo diureng tsa ntlha di le 6, mme morago ga foo a bona 1/2 ya palo eo ya dinotshe di boa mo diureng di le 6 tse di latelang. O bona palo e e gapileng gabedi go feta ya ntlha e a e boneng ya dinotshe tse di tswang mo ntlong, di fofa di tswa mo ntlong mo diureng di le 6 tse di latelang. Morago ga foo dinotshe tsotlhe tse di neng di dule pele ga foo mme di ise di boe di boela mo ntlong mo diureng di le 6 tse di latelang. Ke dinotshe di le kae tse Debra a di boneng di boela mo ntlong mo diureng tsa bofelo di le 6 tsa letsatsi?

Debra is monitoring a beehive to see how many bees come and go in a day. She sees 30 bees leave the hive in the first 6 hours, and then she sees 1/2 that many bees return in the next 6 hours. She sees two times as many bees as she saw first leave the hive fly from the hive and leave in the next 6 hours. Then every bee that left before that hadn't already returned returns to the hive in the next 6 hours. How many bees did Debra see return to the hive in the last 6 hours of the day?
Debra o simolola ka go bona dinotshe di le 30 di tswa mo ntlong, morago a bona 1/2 ya palo eo e boa, 30 x 1/2 = <<30*1/2=15>>15 dinotshe tse di boang mme go setse di le 15 tse di iseng di boe.
Debra o bona palo e e gapileng gabedi go feta ya ntlha e a e boneng ya dinotshe tse di tswang mo ntlong di fofa di tswa mo ntlong mo diureng di le 6 tse di latelang, 30 x 2 = <<30*2=60>>60 dinotshe tse di tswang mo ntlong.
Ka kakaretso, dinotshe di le 30 + 60 = <<30+60=90>>90 di dule mo ntlong.
Go ne go na le dinotshe di le 90 ka kakaretso tse di duleng mo ntlong - 15 tse di setseng di boile = <<90-15=75>>75 dinotshe tse di boelang mo ntlong mo diureng tsa bofelo di le 6 tsa letsatsi.
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Debra first sees 30 bees leave the hive, then sees 1/2 that many return, 30 x 1/2 = <<30*1/2=15>>15 bees that return and 15 bees that are still away from the hive.
Debra sees twice as many bees as first left the hive--which was 30--fly from the hive in the next 6 hours, 30 x 2 = <<30*2=60>>60 bees that leave the hive.
In total, 30 + 60 = <<30+60=90>>90 bees left the hive.
There were 90 bees total that left the hive - 15 bees that already returned = <<90-15=75>>75 bees that return to the hive in the last 6 hours of the day.
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