Answer:
Shawna has 50, 48,46,44 or 42 yellow pencils.
Explanation:
Here, given the total number of pencils Shawna has = 55 pencils
So, The number of YELLOW PENCIL + BLUE PENCIL = 55
or, Y + B = 55
Now let us take the given cases of blue pencils one by one:
1. If she has 5 blue pencils
Here, B = 5
So, as Y + B = 55 ⇒ Y + 5 = 55
or, Y = 5 5 - 5 = 50
Hence, Shawna has 50 yellow pencils.
2. If she has 7 blue pencils
Here, B = 7
So, as Y + B = 55 ⇒ Y + 7 = 55
or, Y = 5 5 - 7 = 48
Hence, Shawna has 48 yellow pencils.
3. If she has 9 blue pencils
Here, B = 9
So, as Y + B = 55 ⇒ Y + 9 = 55 ⇒ Y = 55- 9 = 46
Hence, Shawna has 46 yellow pencils.
4. If she has 11 blue pencils
Here, B = 11
So, as Y + B = 55 ⇒ Y + 11 = 55 ⇒ Y = 55- 11 = 44
Hence, Shawna has 44 yellow pencils.
5. If she has 13 blue pencils
Here, B = 13
So, as Y + B = 55 ⇒ Y + 13 = 55 ⇒ Y = 55- 13 = 42
Hence, Shawna has 42 yellow pencils.