Answer: No, you cannot cover the cost because if you left a 20% tip your total would be $26.23.
Step-by-step explanation: Basically, if your total bill was $21.86 and you wanted to leave a 20% tip you would need to multiply the total, 21.86 by the tip 20%. To do this convert the percentage, 20% to a decimal. 20 divided by 100 is 0.20. 20% as a decimal is 0.20. Then, multiply 21.86 by .20 to find the tip amount. 21.86x.20=4.37200. Round 4.37200 to the nearest hundredth to get 4.37. The 20% tip would be $4.37. Add the total bill to the tip. $21.86+4.37= $26.23. If you have $26 in your wallet, you would be .26 cents short. So, you cannot cover the cost.