4 g + 2 d = 154
g + d = 50
4 g + 2 d = 154
2 g + 2 d = 100
--------------- subtract
2 g = 54
You can take it from there I think.
There are a total of 50 ducks and goats in a farm. They have 154 legs altogether. How many ducks are there?
1 answer