Question 130554
150/X=200/(X+10) NOW CROSS MULTIPLY.
200X=150(X+10)
200X=150X+1,500
200X-150X=1,500
50X=1,500
X=1,500/50
X=30 MPH FOR THE TRUCK.
30+10=40 MPH FOR THE CAR.
PROOF:
150/30=200/40
5=5