Question

A building company used 24 workers to prepare a building site. The site measured 30 acres and the work was completed in 10 days.

Answer 1

If there is 30 acres and it was completed in 10 days they completed 3 acres per day. meaning each worker completed 3/24 or 1/8 acres per day. therefore if they have 45 acres and 12 days they need to complete 3.75 acres per day. if each worker completes 1/8 per day then it will take 30 workers to complete the whole site. as it asks for how many extra workers the answer would be 6.