Sehlokeho sa moopela se otarile diphae tsa pizza di le 20 mme sa ja 70% ya tsona. Sehlopha sa kgwele ya dinao se otarile diphae tsa pizza di fetang tsa moopela gabedi mme sa ja 80% ya tsona. Go setse diphae tsa pizza di le kae?

The Science Center hosted field trips Monday through Friday last week. On Monday, 32 classes visited. Twice as many visited on Tuesday and three times as many visited on Wednesday. Another 30 classes visited on Thursday and 25 visited on Friday. In all, how many classes visited the Science Center last week?
Sa ntlha, bona peresente ya diphae tsa pizza tse di setseng tsa sehlopha sa moopela: 100% - 70% = 30%
Morago ga foo, atisa peresente eo ka palo ya diphae tsa pizza tse di otarilweng ke sehlopha sa moopela go bona palo ya diphae tse di setseng: 30% * 20 diphae tsa pizza = <<30*.01*20=6>>diphae tsa pizza di le 6
Morago ga foo, atisa palo ya diphae tsa pizza tse di otarilweng ke sehlopha sa moopela ka 2 go bona palo ya diphae tse di otarilweng ke sehlopha sa kgwele ya dinao: 20 diphae tsa pizza * 2 = <<20*2=40>>diphae tsa pizza di le 40
Morago ga foo, bona peresente ya diphae tsa pizza tse di setseng tsa sehlopha sa kgwele ya dinao: 100% - 80% = 20%
Morago ga foo, atisa peresente eo ka palo ya diphae tsa pizza tse di otarilweng ke sehlopha sa kgwele ya dinao go bona palo ya diphae tse di setseng: 20% * 40 diphae tsa pizza = <<20*.01*40=8>>diphae tsa pizza di le 8
Morago ga foo, tlhakanya palo ya diphae tsa pizza tse di setseng go tswa mo sehlopheng sengwe le sengwe go bona palogotlhe ya tse di setseng: 8 diphae tsa pizza + 6 diphae tsa pizza = <<8+6=14>>diphae tsa pizza di le 14
#### 14 

On Tuesday, 32 classes x 2 = <<32*2=64>>64 classes visited.
On Wednesday, 32 classes x 3 = <<32*3=96>>96 classes visited.
In all, last week 32 classes on Monday + 64 on Tuesday + 96 on Wednesday + 30 on Thursday + 25 on Friday = <<32+64+96+30+25=247>>247 classes visited the Science Center last week.
#### 247