Susan’s ribbon is 3.8 metres long.
What is the length of her ribbon in millimetres?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.