 
<translate> Da farko ka lissafa yawan harajin ta hanyar ninka $15.00 da 20%: $15.00 *.2 = $3.00. Sai ka cire kuɗin abincin da kuma harajin daga dala 20 don ka samu kuɗin da Jason ya ba shi: dala 20 - dala 15. - dala 3. = dala 2. Saboda haka, amsar ita ce 2. <eng> First calculate how much the tax is by multiplying $15.00 by 20%: $15.00 * .2 = $3.00. Then subtract the cost of the meal and the tax from $20 to find Jason's tip: $20 - $15.00 - $3.00 = $2.00.
Thus, the answer is 2. 