Results
#1. A is twice as efficient as B. If B takes 20 days, A takes =?
#2. A is 3 times as efficient as B. B takes 30 days. A takes =?
#3. A is 4 times as efficient as B. B takes 40 days. A takes =?
#4. A is twice as fast as B. Together they take 6 days. A alone =?
#5. A is 3 times faster than B. Together take 12 days. A alone =?
#6. A and B together do work in 6 days. A alone in 10 days. B alone =?
#7. A and B together do work in 8 days. A alone in 12 days. B alone =?
#8. A and B together do work in 12 days. A alone in 20 days. B alone =?
#9. A and B together do work in 10 days. A alone in 15 days. B alone =?
#10. A and B together do work in 15 days. A alone in 20 days. B alone =?
