Cindy had some marbles at first. She gave 29 of her marbles to her sister and 16 of her marbles to her friend. After that, her mother gave her another 18 marbles. She had 95 marbles in the end. How many marbles did Cindy have at first?
Fraction of marbles left after giving to her sister and her friend
= 1 -
29 -
16 = 1 -
418 -
318 = 1 -
718 =
1118 Number of marbles left after giving to her sister and her friend = 11 u
Number of marbles left after her mother gave her another 18 marbles = 11 u + 18
11 u + 18 = 95
11 u = 95 - 18
11 u = 77
1 u = 77 ÷ 11 = 7
Number of marbles that Cindy had at first
= 18 u
= 18 x 7
= 126
Answer(s): 126
