Last week at the Sunshine Valley Rock Festival, Joel sold 3 times as many tie-dyed T-shirts as silk-screened shirts. He sold a total of 176 shirts. How many tie-dyed shirts did he sell?

Algebraically. X = all types shirts.

3X + X = 176

4X = 176

X = 44

======Number of silk screen shirts.

3 * 44

= 132

======Number of tie-dyed shirts sold and the answer wanted. ( 132 + 44 = 176 total shirts )