1 . It takes 10 days for 4 boys to complete a piece of work. The same work can be completed by 7 girls in 10 days. If 3 boys and 5 girls work in together, approximately how many days will they need to complete the work ?
- A. 10
- B. 15
- C. 7
- D. none of these
View Answer | Discuss in Forum | Workspace | Report |