Answer:
6
Explanation:
Louis build 1/2 of the toy and the total of the toy is 60
Which means
1/2×60=30
Valentina build 2/5 toy
2/5×60
120/5
24
So to determine the amount left
It will be
Total-(Louis+Valentina)
60-(30+24)
60-(54)
60-54
6
So the amount left is 6