Solve : 10% of x + 20% of y = 24, 3x - y = 20

Given, Equations : 10% of x + 20% of y = 24, 3x - y = 20 Substituting value of x from equation (1) in 3x - y = 20, we get : ⇒ 3(240 - 2y) - y = 20 ⇒ 720 - 6y - y = 20 ⇒ 720 - 7y = 20 ⇒ 7y = 720 - 20 ⇒ 7y = 700 ⇒ y = = 100. Substituting value of y in equation (1), we get : ⇒ x = 240 - 2(100) = 240 - 200 = 40. Hence, x = 40 and y = 100.