**A fish’s tail weighs 9 lb. Its head weighs as much as its tail plus half its body. Its body weighs as much as its head and tail. How many pounds does the fish weigh?**

**Answer:**

Total fish weigh 72 lb.

Say, tail = x, body= y & head= z

Then x= 9 lb

As per question z = x+1/2y = 9+1/2y

Again y= x+z = 9+9+1/2y = 18+1/2y [put the value of x & z]

So, y-1/2y= 18

1/2y = 18

Then y = 36

Therefore z = 9+1/2y = 9+1/2*36 = 9+18

So z = 27

As we know that total fish weigh = head+ body + tail = x+y+z

= 9+27+36= 72 lb