Respuesta :
It should be 4 packages, with some mental math.
4 * 20 = 80
4 * 15 = 60
Remember we still have 20 beads left over now. Add it to 60 and bam! You're done!
4 * 20 = 80
4 * 15 = 60
Remember we still have 20 beads left over now. Add it to 60 and bam! You're done!