Step-by-step explanation: Since the triangles are similar, they have a common factor between the two triangles. The side four units long on the smaller triangle corresponds to the side that is eight units long on the bigger triangle by two times. So, the side that is three units long should correspond to the side of the bigger triangle by two times, which would equal six units.
<span>Ok. You would set up the problem like this: 32/x=64/100 and then cross multiply; 3200=64x; divide both sides by 64; x=50. Mary has 50 customers.</span>
