 
 <prompt> Janet dey buy 45-pound containers of cat litter for $21 each. If her cat litter box fit hold 15 pounds of cat litter, and she dey change am every week, how much e go cost am, in dollars, to buy enough litter wey go last for 210 days? <response>: If she change di box every week, den for 210 days, she go change di box 210/7=30 times.
For 15 pounds of litter wey she dey use for each box change, she go need 30*15=450 pounds of cat litter for 210 days.
If she dey buy 45-pound containers, den for 450 pounds she go need to buy 450/45=10 containers of litter.
At $21 per container, to buy enough cat litter for 210 days, e go cost 10 * $21 = $210

Di answer go be 210. 