In order to take a field trip to the science museum, ms. speedi's students sold scented pencils for $1. in the classroom, rowena tried to put the $1 bills into 2 equal piles and found one left over at the end. when polly tried putting the bills in 3 equal piles, she also ended up with one extra bill. frustrated, they tried 4, 5, and 6 equal piles and each time had $1 left over. finally rowena put all the bills evenly into 7 equal piles, and none were left over. based on this information, ms. speedi is sure there is enough money for the fieldtrip!