By increasing the list price of a book by ₹10 a person can buy 10 less books for ₹1,200. Find the original list price of the book.
Answers
Answered by
3
Answer:
Original list price = $ 30
Step-by-step explanation:
Let the original list price be x
Changed list price = x+10
1200/x - 1200/x+10 = 10
12000 = 10(x²+10x)
x²+10x-1200=0
x²+40x-30x-1200=0
x(x+40)-30(x+40)=0
(x-30)(x+40) = 0
x=30
Since price cannot be negative. So -40 is not possible.
Original list price = $ 30
Increased price = $ 40
Answered by
0
Answer:
Original list price = $ 30
Step-by-step explanation:
Let the original list price be x
Changed list price = x+10
1200/x - 1200/x+10 = 10
12000 = 10(x²+10x)
x²+10x-1200=0
x²+40x-30x-1200=0
x(x+40)-30(x+40)=0
(x-30)(x+40) = 0
x=30
Since price cannot be negative. So -40 is not possible.
Original list price = $ 30
Increased price = $ 40
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