Rick bought 3 shirts for $18 each, 2 pair of socks for $3.99 a pair, and a pair of slacks, for $45.00. The sales tax is 8.5%. How much did he pay?

Price of 3 shirts=$18*3=$54

Price of 2 pair of socks=2*$3.99=$7.98

Price of a pair of slack=$45

Total amount - $54+$7.98 + $45-$106.98

Sales tax rate = 8.5%

8.5% of total amount-8.5% of $106.98=

(8.5/100) * 106.98-9.0933

Total amount Rick paid=$106.98+9.0933=$116.0733

Regards