John o lapile thata. O batla go robala lobakanyana, mme o batla go fetsa tiro ya sekolo pele. Fa John a na le metsotso e le 20 ya tiro ya sekolo ya dipalo, metsotso e le 40 ya tiro ya sekolo ya pudulo, le metsotso e le 20 ya tiro ya sekolo ya hisitori mme a na le diura di le 3 pele ga ja dijo tsa maitseboa, o saletswe ke metsotso e le mekae ya go robala?

Greta and Celinda are baking cookies. Greta bakes 30 cookies and Celinda bakes twice as many. If the pair eat 10 of the cookies while they are cooling and put the rest in a box, how many cookies are there in the box?
John o tshwanetse go dirisa metsotso e le 20+40+20 = <<20+40+20=80>>80 mo tirong ya sekolo.
John o na le diura di le 3* metsotso e le 60= <<3*60=180>>180 pele ga dijo tsa maitseboa.
Ka jalo, John o saletswe ke metsotso e le 180-80=<<180-80=100>>100 ya go robala. 
#### 100 

Celinda bakes 30 cookies * 2 = <<30*2=60>>60 cookies.
So in total, Celinda and Greta bakes a total of 30 + 60 = <<30+60=90>>90 cookies.
After eating some of the cookies, they have 90 baked cookies – 10 eaten cookies = <<90-10=80>>80 cookies in the box.
#### 80