First find the total cost of the shirt: $20 * 2 = $<<20*2=40>>40
Then find the total cost of the tie: $40 / 5 = $<<40/5=8>>8
Then find the cost of one uniform set: $20 + $40 + $8 + $3 = $<<20+40+8+3=71>>71
Then multiply the cost of each set by the number of sets each student has to buy to find the total cost: $71/set * 5 sets = $<<71*5=355>>355
#### 355