Bryan, Jackson, Stella and Jayden share the same hobby of collecting stickers. The average number of stickers collected by the 4 friends is 22. Jackson collected 7 more stickers than Stella but 13 fewer stickers than Bryan. Jayden collected 3 stickers fewer than Stella. Find the average number of stickers collected by Jackson, Stella and Jayden. Round off your answer to the nearest whole number.
Number of stickers Stella collected = 1 u
Number of stickers Jackson collected = 1 u + 7
Number of stickers Bryan collected = 1 u + 7 + 13 = 1 u + 20
Number of stickers Jayden collected = 1 u - 3

Total number of stickers collected
= 4 x 22
= 88

Total number of stickers collected in units
= 1 u + 1 u + 7 + 1 u + 20 + 1 u - 3
= 4 u + 24

4 u + 24 = 88
4 u = 88 - 24 = 64

1 u = 64 ÷ 4 = 16

Total number of stickers collected by Jackson, Stella and Jayden
= 1 u + 7 + 1 u + 1 u - 3
= 3 u + 4
= 3 x 16 + 4
= 52

Average number of stickers collected by Jackson, Stella and Jayden
= 52 ÷ 3
≈ 17 (Round off to the nearest whole number.)

Answer(s): 17