Wendy had some marbles at first. She gave 210 of her marbles to her cousin and 14 of her marbles to her best friend. After that, her mother gave her another 2 marbles. She had 101 marbles in the end. How many marbles did Wendy have at first?
Fraction of marbles left after giving to her cousin and her best friend
= 1 -
210 -
14 = 1 -
420 -
520 = 1 -
920 =
1120 Number of marbles left after giving to her cousin and her best friend = 11 u
Number of marbles left after her mother gave her another 2 marbles = 11 u + 2
11 u + 2 = 101
11 u = 101 - 2
11 u = 99
1 u = 99 ÷ 11 = 9
Number of marbles that Wendy had at first
= 20 u
= 20 x 9
= 180
Answer(s): 180
