If 4 people bought tickets for 15 dollars and 5 kids for 9 dollars each what was the total

$${\mathtt{4}}{\mathtt{\,\times\,}}{\mathtt{15}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\times\,}}{\mathtt{9}} = {\mathtt{105}}$$  dollars

If your asking for the amount of money it total they spent then $125