Ali o ne a na le $21. Leila o mo file halofo ya $100 ya gagwe.  Ali o na le bokae jaanong?

Grayson recycles cans and bottles for money each week. An aluminum can is worth two cents and a plastic bottle is worth three cents. She drinks three aluminum cans of soda and five plastic bottles of water a week. How many cents does Grayson earn from recycling in a four-week month?
Leila o file Ali $100/2 = $<<100/2=50>>50.
Jaanong Ali o na le $21+ $50 = $<<21+50=71>>71.
#### 71 

Grayson earns 2 * 3 = <<2*3=6>>6 cents from soda cans a week.
She earns 3 * 5 = <<3*5=15>>15 cents from water bottles a week.
Thus, she earns 6 + 15 = <<6+15=21>>21 cents from recycling each week.
In a four week month, she earns 21 * 4 = <<21*4=84>>84 cents from recycling.
#### 84