Some time ago, keith's height and his nephew's height were at a ratio of 15 : 7. then keith's height increased by 16% and his nephew's height doubled. if keith is now 34 cm taller than his nephew, what is their total current height?

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.