well you have to see how far they have gotten after 4 hours. so 4*40=160 50*4=200. since it was opposite directions you add. so 160+200=360.
Answer:
Step-by-step explanation:
X=(54-3y)/10 and 5y-2×(54-3y)/10=34
=> 5y- (2×54)/10+(2×3y)/10=34
=>y=8
=>x=(54-3×8)=30
= 972π;
