Question 120

What's the Error? A clothing store charges ₹ 1024 for 4 T-shirts. A student says that the unit price is ₹ 25.6 per T-shirt. What is the error? What is the correct unit price?

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Solution

By unitary method,
Cost of 4 T-shirts = ₹ 1024
Cost of 1 T-shirt = $\frac{1024}{4}$ = ₹ 256
So, the error = ₹ (256 - 25.6) = ₹ 230.4
Hence, the correct unit price is ₹ 256.

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Unitary Method

Standard VI Mathematics

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Question 120 What's the Error? A clothing store charges ₹ 1024 for 4 T-shirts. A student says that the unit price is ₹ 25.6 per T-shirt. What is the error? What is the correct unit price?

By unitary method, Cost of 4 T-shirts = ₹ 1024 Cost of 1 T-shirt = 10244 = ₹ 256 So, the error = ₹ (256 - 25.6) = ₹ 230.4 Hence, the correct unit price is ₹ 256.

Question 120

What's the Error? A clothing store charges ₹ 1024 for 4 T-shirts. A student says that the unit price is ₹ 25.6 per T-shirt. What is the error? What is the correct unit price?

By unitary method,
Cost of 4 T-shirts = ₹ 1024
Cost of 1 T-shirt = $\frac{1024}{4}$ = ₹ 256
So, the error = ₹ (256 - 25.6) = ₹ 230.4
Hence, the correct unit price is ₹ 256.