In a stall, some toy masks and dolls were on sale.
15 of the items were toy masks.
13 of the toy masks and 46 dolls were sold. There were
16 of the items left in the stall. How many toy masks and dolls were there in the stall at first?
| |
Toy masks |
Dolls |
Total |
Comparing toy masks
and dolls at first |
1x6 =
6 u |
4x6 =
24 u |
5x6 =
30 u |
| Before |
3x2 =
6 u |
|
6x5 =
30 u |
| Change |
- 1x2 =
- 2 u |
- 46
|
- 5x5 =
- 25 u |
| After |
2x2 =
4 u |
1 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 toy masks at first is repeated. Make the number of toy masks the same. LCM of 6 and 3 is 6.
Number of dolls left
= 5 u - 4 u
= 1 u
Number of dolls sold
= 24 u - 1 u
= 23 u
23 u = 46
1 u = 46 ÷ 23 = 2
Number of toy masks and dolls at first
= 30 u
= 30 x 2
= 60
Answer(s): 60
