Sarah o ile a ya go reka dibuka kwa lebenkeleng mme a dirisa P300 mo dibukeng. Fa e le gore buka nngwe le nngwe e ne e le P15 mme a neela bana ba gagwe ba le banè palo e e lekanang ya dibuka, ngwana mongwe le mongwe o ne a fiwa dibuka di le kae?

At a certain grade level, three-fourths of students have a desktop computer at home. If 20 students do not have desktop computers, how many students are there at that grade level?
E re ka a dirisitse P300 mo dibukeng mme buka nngwe le nngwe e le P15, o rekile dibuka di le P300/P15= <<300/15=20>>20.
Fa Sarah a neetse bana ba gagwe palo e e lekanang ya dibuka, ngwana mongwe le mongwe o filwe 20/4 = <<20/4=5>>5.
#### 5

Twenty students represent 1 - 3/4 = 1/4 of the students at that level.
So, there are 4 x 20 students = <<4*20=80>>80 students at that level.
#### 80