Kylie had some marbles at first. She gave 110 of her marbles to her cousin and 14 of her marbles to her best friend. After that, her mother gave her another 15 marbles. She had 106 marbles in the end. How many marbles did Kylie have at first?
Fraction of marbles left after giving to her cousin and her best friend
= 1 -
110 -
14 = 1 -
220 -
520 = 1 -
720 =
1320 Number of marbles left after giving to her cousin and her best friend = 13 u
Number of marbles left after her mother gave her another 15 marbles = 13 u + 15
13 u + 15 = 106
13 u = 106 - 15
13 u = 91
1 u = 91 ÷ 13 = 7
Number of marbles that Kylie had at first
= 20 u
= 20 x 7
= 140
Answer(s): 140
