Mary, Natalie and Kathy were playing with beads. Mary started with 84 beads and in the first game, she won
13 more beads from Natalie. In the second game, Mary lost
57 of her original number of beads to Kathy. Natalie lost as many beads as Mary to Kathy. In the final game, Mary won
14 of her original number of beads from Natalie. All of them ended up with the same number of beads.
- How many beads did Mary have in the end?
- How many beads did Natalie have at first?
|
Mary |
Natalie |
Kathy |
Before |
84 |
|
|
First game |
+ 28 |
- 28 |
|
Second game |
- 60 |
|
+ 60 |
|
|
- 60 |
+ 60 |
Final game |
+ 21 |
- 21 |
|
After |
1 u |
1 u |
1 u |
(a)
Number of beads that Mary won from Natalie
=
13 x 84
= 28
Number of beads that Mary lost to Kathy
=
57 x 84
= 60
Number of beads that Mary won from Natalie
=
14 x 84
= 21
Number of beads that Mary had in the end
= 84 + 28 - 60 + 21
= 73
(b)
Number of beads that Natalie had at first
= 1 u + 21 + 60 + 28
= 73 + 21 + 60 + 28
= 182
Answer(s): (a) 73 ; (b) 182