Esther had some pencils at first. She gave 25 of her pencils to her sister and 13 of her pencils to her buddy. After that, her mother gave her another 20 pencils. She had 64 pencils in the end. How many pencils did Esther have at first?
Fraction of pencils left after giving to her sister and her buddy
= 1 -
25 -
13 = 1 -
615 -
515 = 1 -
1115 =
415 Number of pencils left after giving to her sister and her buddy = 4 u
Number of pencils left after her mother gave her another 20 pencils = 4 u + 20
4 u + 20 = 64
4 u = 64 - 20
4 u = 44
1 u = 44 ÷ 4 = 11
Number of pencils that Esther had at first
= 15 u
= 15 x 11
= 165
Answer(s): 165
