Answer: Height of Stefan and Keiko would be 170.06 cm and 168.56 cm respectively.
Step-by-step explanation:
Since we have given that
Height of Annalisa = 64 inches = 162.56 cm
According to question , Stefan is 7.5 cm shorter than Annalisa.
So, height of Stefan would be
162.56+7.5 = 170.06 cm
According to question , keiko is 1.5 inches than Stefan.
So, height of Keiko is given by
170.06-1.5 = 168.56.
Hence, height of Stefan and Keiko would be 170.06 cm and 168.56 cm respectively.