A family went out to dinner and the bill was $113. If they want to leave a 19% tip, how much tip should they leave?

In this problem there are several vital information's that have been given. Based on them it is possible to find the required answer. It is already mentioned that the amount of bill for the family is $113. Percentage of tips to be given is 19%

Then

The amount of tips given by the family = 113 * (19/100)

= 113 * 0.19

= 21.47

So the family should leave a tips of $21.47. Sometimes it could additionally be required to find the total amount that the family has to pay. In that case it is required to add the amount of tips with the billed amount.