Tim packed a total of 221 card games and board games into 19 boxes. The card games and board games were packed in separate boxes. Each box could hold either 18 card games or 7 board games only.
- How many board games were there in all?
- Winnie paid a total of $1135 for all the card games and board games. The cost of one board game is $11. Find the total cost of the card games.
Boxes of
card games |
Number of
card games |
Boxes of
board games |
Number of
board games |
Total number
of games |
19
|
19 x 18 =
342 |
0
|
0
|
342
|
18
|
18 x 18 =
324 |
1
|
1 x 7 =
7 |
331
|
8
|
8 x 18 =
144 |
11
|
11 x 7 =
77 |
221
|
(a)
Total number of games if all are card games
= 18 x 19
= 342
Big difference between the number of boxes of card games and boxes of board games
= 342 - 221
= 121
Small difference between the number of 1 box of card games and 1 box of board games
= 18 - 7
= 11
Number of boxes of board games
= 121 ÷ 11
= 11
Total number of board games
= 11 x 7
= 77
(b)
Total cost of board games
= 77 x 11
= $847
Total cost of card games
= 1135 - 847
= $288
Answer(s): (a) 77; (b) $288
