Jaslyn had some pens at first. She gave 110 of her pens to her sister and 14 of her pens to her friend. After that, her mother gave her another 11 pens. She had 102 pens in the end. How many pens did Jaslyn have at first?
Fraction of pens left after giving to her sister and her friend
= 1 -
110 -
14 = 1 -
220 -
520 = 1 -
720 =
1320 Number of pens left after giving to her sister and her friend = 13 u
Number of pens left after her mother gave her another 11 pens = 13 u + 11
13 u + 11 = 102
13 u = 102 - 11
13 u = 91
1 u = 91 ÷ 13 = 7
Number of pens that Jaslyn had at first
= 20 u
= 20 x 7
= 140
Answer(s): 140
