If (2x+5)∘, 3x∘, (5x+15)∘and 40∘ are four angles of a quadrilateral, find the value of ∠x and hence find the four angles. [2 MARKS]

If (2x+5)∘, 3x∘, (5x+15)∘and 40∘ are four angles of a quadrila

1.	If (2x+5)∘, 3x∘, (5x+15)∘and 40∘ are four angles of a quadrilateral, find the value of ∠x and hence find the four angles. [2 MARKS]
Answer» If $(2 x + 5)^{\circ}$ , $3 x^{\circ}$ , $(5 x + 15)^{\circ}$ and $40^{\circ}$ are four angles of a quadrilateral, find the value of $∠ x$ and hence find the four angles. [2 MARKS]