Cody Was 165cm Tall On The First Day Of School This Year, Which Was 10% Taller Than He Was On The First Day Of School Last Year., How Tall Was Cody On

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

How tall was Cody on the first day of school last year?

  Let h be Codys height on the 1st day of school last year
h + 0.10h = 165
1.10h = 165
h = 165/1.10
h = 150cm