Standing on the table

Clement and Dmitri both measure how much taller they are than the other when standing on a table. Can you work out how tall the table is?

Problem



When Clement stands on a table and Dmitri stands on the floor, Clement is $80\text{cm}$ taller than Dmitri. When Dmitri stands on the table and Clement stands on the floor, Dmitri is $1\text{m}$ taller than Clement.

How tall is the table?

If you liked this problem, here is an NRICH task that challenges you to use similar mathematical ideas.