allery₹1,200 buys books at ₹p each. A ₹10 price cut permits 4 more books for ₹1,200. Find p.
A₹70
B₹60
C₹50
D₹40
Answer & Solution
Correct answer: B. ₹60
The purchase relation 1200/(p−10)−1200/p=4 yields p(p−10)=3000 and p=60.
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