Answer:
Okay so we know that 75% of the original cost is $1.50. If we divide this by 3 we will get (75%/3=) 25% of the original cost(which is $0.50). if we add this $0.50(25%) to $1.50(75%), we get $2.00, which is the original cost(100%). In this I also explained the question two answer.
1 ) $2.00
2 ) 75%