Discussion
Consider the following statements :
1. If 5 workers can finish a job in 10 days, then 10 workers can finish it in 6 days.
2. If four pencils cost ₹ 20, then 10 pencils cost ₹ 55.
3. If two litres of milk cost ₹ 50, then 4 litres cost ₹ 120.
How many of the statements given above are correct?
Answer: D
None of the statements is correct.
Statement 1: 5 workers × 10 days = 50 worker-days, so 10 workers need \(50 / 10 = 5\) days, not 6.
Statement 2: four pencils for ₹ 20 is ₹ 5 each, so 10 pencils cost ₹ 50, not ₹ 55.
Statement 3: two litres for ₹ 50 is ₹ 25 a litre, so 4 litres cost ₹ 100, not ₹ 120.
Each statement is a simple proportion with a wrong figure, so every option claiming one or more correct statements fails.
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