Answer:
The cost of the DVD player was $120
Step-by-step explanation:
we know that
Alessia and her two sisters each paid 20% of the cost of a new DVD player
so
Alessia and her two sisters paid 60% of the cost of a new DVD player
Their parents paid for the remainder ($48) -----> 100%-60%=40%
therefore
40%-------> represent $48
applying proportion find the cost of the DVD player
$48/40%=x/100%
x=100*48/40
x=$120
