Ryan has 30 stickers. Steven has thrice as many stickers as Ryan.  Terry has 20 more stickers than Steven. How many stickers do they have altogether? Let's be accurate as possible.
Steven has 3 x 30 = 90 stickers. And, Terry has 90 + 20 = 110 stickers. Therefore, they have 30 + 90 + 110 = 230 stickers altogether.
The answer: 230.