 
 <translate> The money he earned from an oil change is $20 x 5 = $ 100. The money he earned from the repair is $30 x 10 = $300. The money he earned from the car wash is $15 x 5 = $75. Therefore, Cid earned a total of $100 + $300 + $75 = $475.
The answer: 475. <hau> Kudin da ya samu daga canjin mai shi ne $ 20 x 5 = $ 100. Kudin da ya samu daga gyaran shi ne $30 x 10 = $300. Kudin da ya samu daga wurin wanke mota $15 x 5 = $75. Saboda haka, Cid ya sami jimillar $ 100 + $ 300 + $ 75 = $ 475. Amsar ita ce: 475. 