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p men can complete a piece of work in 60...

p men can complete a piece of work in 60 days. Find the value of p
Statement 1: 30 men can complete the same work in 80 days.
Statement 2: (p+8) men can complete the work in 10 days less than the number of days required by p men

A

A)Statement (1) alone is sufficient
to answer the question but
statement (2) alone is not sufficient
to answer the question.

B

B)Statement (2) alone is sufficient
to answer the question
but statement (I) alone is not sufficient
to answer the question.

C

C)Both the statements taken together
are necessary to answer
the question, but neither
of the statements alone is sufficient
to answer the question.

D

D)Either Statement (1) or (2) is sufficient.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to determine the value of \( p \) given the information from the two statements. Let's break it down step by step. ### Given: - \( p \) men can complete a piece of work in 60 days. ### To Find: - The value of \( p \). ### Statement 1: - 30 men can complete the same work in 80 days. **Step 1: Calculate the total work using Statement 1.** The total work can be calculated as: \[ \text{Total Work} = \text{Number of Men} \times \text{Number of Days} \] From Statement 1: \[ \text{Total Work} = 30 \text{ men} \times 80 \text{ days} = 2400 \text{ man-days} \] **Step 2: Relate total work to \( p \) men.** From the original statement, \( p \) men can complete the work in 60 days: \[ \text{Total Work} = p \text{ men} \times 60 \text{ days} = 60p \text{ man-days} \] **Step 3: Set the two expressions for total work equal to each other.** \[ 60p = 2400 \] **Step 4: Solve for \( p \).** \[ p = \frac{2400}{60} = 40 \] ### Conclusion from Statement 1: Statement 1 alone is sufficient to determine that \( p = 40 \). --- ### Statement 2: - \( (p + 8) \) men can complete the work in 10 days less than the number of days required by \( p \) men. **Step 1: Determine the number of days for \( (p + 8) \) men.** Since \( p \) men take 60 days, \( (p + 8) \) men take: \[ 60 - 10 = 50 \text{ days} \] **Step 2: Calculate the total work using Statement 2.** Using \( (p + 8) \) men: \[ \text{Total Work} = (p + 8) \text{ men} \times 50 \text{ days} \] This can be expressed as: \[ \text{Total Work} = 50(p + 8) \text{ man-days} \] **Step 3: Set this equal to the work done by \( p \) men.** From the original statement: \[ 60p = 50(p + 8) \] **Step 4: Expand and solve for \( p \).** \[ 60p = 50p + 400 \] \[ 60p - 50p = 400 \] \[ 10p = 400 \] \[ p = \frac{400}{10} = 40 \] ### Conclusion from Statement 2: Statement 2 alone is also sufficient to determine that \( p = 40 \). --- ### Final Conclusion: Both statements independently provide sufficient information to determine the value of \( p \). Thus, the answer is that either statement alone is sufficient.
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