7 men build a house in 300 days. How many men, working at the same rate, can build house in 70 days?

To solve this, we can first determine the total man-days required to build the house. If 7 men can build a house in 300 days, the total man-days needed is 7 men × 300 days = 2100 man-days. Now, to find out how many men are needed to complete the house in 70 days, we divide the total man-days by the number of days: 2100 man-days ÷ 70 days = 30 men. So, 30 men can build the house in 70 days! Now, isn’t it fascinating how we can figure out the manpower needed for various projects just by knowing the time and number of workers involved? It's like a mini adventure in math! Did you know that concepts like this are widely used in construction and project management? They employ similar calculations to estimate workforce needs and project timelines, ensuring that buildings go up smoothly without missing deadlines. So next time you see a construction site, you might appreciate the math behind the hustle!