Ella o amogetse $33 morago ga go tsamaisa dintša diura di le 3. Fa a tswelela go tsamaisa dintša ka lobelo le le tshwanang, o tla bo a amogetse bokae morago ga diura di le 12?

Seven bottles of soda cost $21.00 while 4 bottles of water cost $8. If David wants to buy 3 bottles of soda and 2 bottles of water, how much will that cost?
Ella o amogetse $33 / diura di le 3 tsa go tsamaisa dintša = $<<33/3=11>>11 ka ura.
Ka jalo, morago ga diura di le 12 a tsamaisa dintša, Ella o tla bo a amogetse $11 x 12 = $<<12*11=132>>132.
#### 132 

One bottle of soda costs $21.00/7 = $<<21/7=3.00>>3.00.
Three bottles of soda cost $3.00 x 3 = $<<3*3=9.00>>9.00.
One bottle of water costs $8.00/4 = $<<8/4=2.00>>2.00.
Two bottles of water cost $2.00x 2 = $<<2*2=4.00>>4.00.
Therefore, 3 bottles of soda and 2 bottles of water cost $9.00 + $4.00 = $13.00.
#### 13