(3x+10) / (5x+10) = 5/7 => 21x + 70 = 25x + 50 => 4x = 20 => x = 5. Numbers are 15 and 25.
(3x+10) / (5x+10) = 5/7 => 21x + 70 = 25x + 50 => 4x = 20 => x = 5। संख्याएँ 15 और 25 हैं।