Question 1170623
U+2B+4S=160
2B=4S so B=2S
U+B+S=65
2nd  into first and third
U+2B+2B=160
U+1.5B=65, multiply above by -1 and add
-U-4B=-160
-2.5B=-95
B=38 bicycles and 76 wheels
S=19 skateboards and 76 wheels
U=8