In a kiosk, some frisbees and rubber balls were on sale.
15 of the items were frisbees.
23 of the frisbees and 252 rubber balls were sold. There were
16 of the items left in the kiosk. How many frisbees and rubber balls were there in the kiosk at first?
| |
Frisbees |
Rubber balls |
Total |
Comparing frisbees
and rubber balls at first |
1x6 =
6 u |
4x6 =
24 u |
5x6 =
30 u |
| Before |
3x2 =
6 u |
|
6x5 =
30 u |
| Change |
- 2x2 =
- 4 u |
- 252
|
- 5x5 =
- 25 u |
| After |
1x2 =
2 u |
3 u |
1x5 =
5 u |
The total number of toys at first is repeated. Make the total number of toys at first the same. LCM of 5 and 6 is 30.
The number of frisbees at first is repeated. Make the number of frisbees the same. LCM of 6 and 3 is 6.
Number of rubber balls left
= 5 u - 2 u
= 3 u
Number of rubber balls sold
= 24 u - 3 u
= 21 u
21 u = 252
1 u = 252 ÷ 21 = 12
Number of frisbees and rubber balls at first
= 30 u
= 30 x 12
= 360
Answer(s): 360
