Posted by ayan on Monday, March 18, 2013 at 12:23am.
Sally sells seashells by the seashore. In the morning, her sack of shells weighed 70 N. She sold seventy shells and in the evening her sack weighed 7 N. What was the average mass in kg of the shells she sold?

science  Dave, Monday, March 18, 2013 at 7:35am
0.0928
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