1/3 x 3 is one mile which is then 3/12 hours or 1/4 hours. Now multiply by 4 and you have

X - 0.40x = 60
0.60x = 60
x = 60 / 0.60
x = 100 <== ur number
Eh.....Actually.........
There are three answers,,,,,,
|-9|=9
-|9|=-9
-|-9|=9
Answer:
x = 27 and y = 17 is the solution the the given pair of equations.
Number of dinosaur's rib = x = 27
Number of dinosaur's arm = y = 17