Question

a knitted scarf uses three balls of wool. i start the day with b balls of wool and knit s scarves. How many balls of wool do i have left at the end of the day
(a) 3(b-s), (b) b-3-s , (c) b-3s (d) , 3bs (e) s+3b
SHOW WORK PLEASE! thanksa knitted scarf uses three balls of wool. i start the day with b balls of wool and knit s scarves. How many balls of wool do i have left at the end of the day
(a) 3(b-s), (b) b-3-s , (c) b-3s (d) , 3bs (e) s+3b
SHOW WORK PLEASE! thanks@Mathematics

Answer 1

b -3s

Answer 2

How did you get that? You should always post an explanation with your answer.

Answer 3

knitted scarf uses 3 balls of wool => s scarfs use 3s balls of wool.
we have b balls of wool so we have (b - 3s) balls of wool left.

Answer 4

that makes absolutely no sense

Answer 5

You might want to work on your explanation skills

Answer 6

we know that 1 scarf uses 3 balls of wool; so 2 scarfs use 6 balls of wool; 3 scarfs use 9 balls of wool so generalising for s; we have s scarfs use 3s balls of wool.
We are given b balls of wool at the start of the day; so if we use 3s balls of wool to make s scarfs, subtracting it from the b balls of wool we are given we get (b - 3s) balls of wool remaining