Given :
Tom's family of 4 went out to dinner. They spent $46.40 for the meal.
They left a tip of 15% and the tax rate is 7 ¼% .
To Find :
The total cost of the dinner.
Solution :
Amount of tip ,
.
Amount of tax ,
.
Total cost of dinner , T = $( 46.40 + 6.96 + 3.364 )
T = $56.724
Therefore, total cost of the dinner is $56.724 .
Hence, this is the required solution.