Circle plus triangle equals 75 triangle plus square equals 60 circle plus square equals 450 how many squares equals how many triangles equals how many
○+△=75
△+□=60
○+□=45
○+△+△+□+○+□=2(△+○+□)=75+60+45=180
So △ 0 + □ = 90
90-75 = 15 so □ = 15
90-60 = 30 so zero = 30
90-45 = 45, so △ = 45