Posted by Anonymous on Tuesday, October 29, 2013 at 4:55pm.
Explain how the answers for 20 divided by 1/7 (140), 20 divided by 2/7 (70) and 20 divided 6/7 (23 1/3) are related. Show why this makes sense.

Math  PsyDAG, Wednesday, October 30, 2013 at 2:09pm
When dividing by a fraction, it is the same as multiplying by the inverse of the fraction.
20 divided by 1/7 = 20 * 7/1 = 140
Check with the other problems. 
Math  Sharon, Wednesday, October 12, 2016 at 2:50pm
9.20

Math  Sharon, Wednesday, October 12, 2016 at 2:50pm
9.26