Q:

28 men can complete a piece of work in 15 days and 15 women can completed the same piece of work in 24 days. What is the respective ratio between the amount of work done by 30 men in 1 day and the amount of work done by 18 women in 1 days? 

• 1
  10 : 7
• 2
  3 : 5
• 3
  5 : 4
• 4
  9 : 5
• 5
  Not