If Ruby is 2 centimeters shorter than Pablo.  Pablo is 70 centimeters taller than Charlene.  Janet is 62 centimeters tall and Charlene is twice that tall.  How tall is Ruby?
Charlene is 2 * 62 cm = <T>multiply(2, 62)=124 cm tall.
Pablo is 70 cm + 124 cm = <T>add(70, 124)=194 cm tall.
Ruby is 194 cm - 2 = <T>subtract(194, 2)=192 cm tall.
