John o ikaeletse go rekela ena, bana ba gagwe ba le babedi, le mosadi wa gagwe difouno tse disha.  Founo nngwe le nngwe morago ga tse pedi tsa ntlha e rekisiwa halofo ya tlhwatlhwa.  Fa founo e le $600, o duelelitse tsotlhe bokae?

Nani is 8 years old. His brother is twice his age. Nani's sister is 25% younger than him. What is the total age of all three of the family members?
O rekile difouno di le 1+2+1=<<1+2+1=4>>4
Difouno tse 2 di bitsa 600 ka jalo tlhotlhwa ya tsona ke 2*600=$<<2*600=1200>>1200
Difouno tse dingwe tse pedi di bitsa 600/2=$<<600/2=300>>300
Ka jalo di bitsa 300*2=$<<300*2=600>>600
Ka jalo tlhotlhwa yotlhe ke 1200+600=$<<1200+600=1800>>1800
#### 1800 

Nani's brother is 8 * 2 = <<8*2=16>>16 years old.
Nani's sister is 25/100 * 8 = <<25/100*8=2>>2 years younger than he is.
That means she is 8 - 2 = <<8-2=6>>6 years old.
In total all mentioned family members, are 16 + 6 + 8 = <<16+6+8=30>>30 years old.
#### 30