Question

Cody was
\[165\,\text{cm}\] 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?

\[\text{cm}\]

Answer 1

Let last year's height be x cm. Then 165 = 1.10x, so x = 165 ÷ 1.10 = 150.

Cody was 150 cm tall last year.