75. If 60 men can do a piece of work in 16 days, how many men will do the same work in 4 days at the same pace? \( \qquad \) men A. 15 B. 20 C. 40 D. 200 E. 240 76. In how many years will \( \mathbf{N} 1.500 \) yield

Let's solve the first problem step by step. ### Problem 75: We know that: - 60 men can complete the work in 16 days. First, we calculate the total amount of work in "man-days": \[ \text{Total Work} = \text{Number of Men} \times \text{Number of Days} = 60 \times 16 = 960 \text{ man-days} \] Now, we need to find out how many men are required to complete the same work in 4 days. Let \( x \) be the number of men needed. The equation for the work done in 4 days is: \[ \text{Total Work} = \text{Number of Men} \times \text{Number of Days} = x \times 4 \] Setting the two expressions for total work equal gives us: \[ 960 = x \times 4 \] Now, we can solve for \( x \): \[ x = \frac{960}{4} = 240 \] Thus, the number of men required to complete the work in 4 days is \( \boxed{240} \). ### Problem 76: The second part of your question seems incomplete. It mentions "In how many years will \( \mathbf{N} 1.500 \) yield," but it does not provide enough information about the interest rate or the context of the yield. Please provide additional details or clarify the question so I can assist you further.