Kylie had some pencils at first. She gave 18 of her pencils to her sister and 24 of her pencils to her friend. After that, her mother gave her another 4 pencils. She had 19 pencils in the end. How many pencils did Kylie have at first?
Fraction of pencils left after giving to her sister and her friend
= 1 -
18 -
24 = 1 -
18 -
48 = 1 -
58 =
38 Number of pencils left after giving to her sister and her friend = 3 u
Number of pencils left after her mother gave her another 4 pencils = 3 u + 4
3 u + 4 = 19
3 u = 19 - 4
3 u = 15
1 u = 15 ÷ 3 = 5
Number of pencils that Kylie had at first
= 8 u
= 8 x 5
= 40
Answer(s): 40
