A shopkeeper sold a book for Rs.40 and gets 15% profit.If he wants to get 20% profit then what will be the actual price of book?
1 answer:
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Answer:
h ≈ 11.9
Step-by-step explanation:
Since the triangle is right we can use the cosine ratio to find h
cos24° = =
Multiply both sides by 13
13 × cos24° = h
⇒ h = 11.9 cm ( to 1 dec. place )