In a class of 30 students 60% said they walk to school Write a proportion that you could use
to determine the number of students in
the class who walk to school.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

What is the total area of the figure?

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?