 
<translate> Yanzu ya sayi 4 / 2 = kofi 2. Sabon farashin shine 2 *.5 = $ 1 fiye da tsohuwar farashin. Don haka yanzu ya biya 2 + 1 = $3 a kowace kofi. Don haka ya kashe 3 * 2 = $6. Ya kasance yana kashe 4 * 2 = $8. Saboda haka yana ajiye 8 - 6 = $2 a rana. Wannan ya ba da dalilin amsa wace tambaya ce? Tambaya da Amsa: <eng> He now buys 4 / 2 = 2 coffees. The new price is 2 * .5 = $1 more than the old price. So he now pays 2 + 1 = $3 per coffee. So he spends 3 * 2 = $6. He used to spend 4 * 2 = $8. So he saves 8 - 6 = $2 per day.
This justifies what answer for what question? Q & A:  