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The cost of 30 books is Rs. 150. If more than 50 books are purchased, then a discount of 10% is given. How much will 70 books cost?1. Rs. 3002. Rs. 3153. Rs. 3504. Rs. 335 |
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Answer» Correct Answer - Option 2 : Rs. 315 Given: The cost of 30 books is Rs. 150 Concept: SP = [MP - (MP × Discount%)] Calculation: According to the question The cost of 30 books is 150 rupees, then The cost of one book is ⇒ 150/30 ⇒ 5 rupees The cost of 70 books is ⇒ 70 × 5 ⇒ 350 rupees Now, The cost of 70 books after getting a 10% discount is ⇒ [350 - (350 × 10%)] ⇒ 350 - 35 ⇒ 315 rupees ∴ The cost of 70 books is 315 rupees. |
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