A class of 35 students has an average height of 180 cm

A class of 35 students has an average height of 180 cm. seven students whose average height is 120 cm, left the class and seven others whose average height is 140 cm, joined. Calculate the new average height of the students of the class (in cm) is?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #21682