60 minutes is 20% of how many minutes show work on a number line

Trigonometry hellllllpppppppp asap

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?