Practicing Success
Practicing Success
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6 pencils cost ₹30 and 12 pens cost ₹120. What is the average cost of 50 pencils and 50 pens? |
₹6.75 ₹7.5 ₹5 ₹5.75 |
₹7.5 |
Total cost of 6 pencil = 30 Cost of 50 pencil = \(\frac{30}{6}\) × 50 = Rs250 Cost of 12 pens = 120 Cost of 50 pens = \(\frac{120}{12}\) × 50 = Rs500 Average of 50 pencils & 50 pens = \(\frac{500 + 250}{100}\) = Rs7.5 |
