8. Mark can clean his father's office in 30 minutes. His younger sister Lynn can clean the office in 40 minutes. How long will it take the two of them together to clean the office?

What is 24% of 315 Math

A library had 6422 music CDs stored on 26 shelves. If the same number of CDs were stored on each shelf, how many CDs were stored on each shelf?

Steve puts only dimes and quarters into his piggy bank. Right now he has five more dimes than quarters there, and they make exactly $74! How many quarters and how many dimes are there in Steve's piggy bank?

A=2 (L+W) : i must Rewrite this question in terms of the indicated letter. in this case w is the indicated number.

Kara's pet is 5 years younger than Alaiza's pet. The sum of their ages is 41. How old is Alaiza's pet?

Equivalent expression 3p+12m+8

The value of the expression 6+5 (3) / 4-10is

Drive-in movies were popular in the 1930s and 1940s. In 1933, there were 100 drive-in theater in the U. S by 1945 there were 2200. What was the percent of increase from 1933 to 1945?

the singer made $54 for a 3 hour job on friday night and $60 for a 4 hour job on Saturday. which job paid better per hour? how much better?

What is the fraction to 12.09