Problem:
Triangles ABC and XYZ are similar, with A corresponding to X and B to Y. If AB=3,BC=4 and XY=5, then YZ is
Answer Choices:
A. 343
B. 6
C. 641
D. 632
E. 8
Solution:
The ratios of corresponding sides are equal, so
ABXY=BCYZ or YZ=34⋅5=632