【小学数学竞赛题】让你家娃来做做~There are 8 flflowers on a rose bush. There are no more than one insect per flflower. More than half of the flflowers are occupied. The number of butterflflies on the flflowers is twice the number of dragonflflies on the flflowers. How many butterflflies are on the flflowers? 　 (more...)