Devaughn's age is two times sydney's age. the sum of their ages is 30

. what is sydney's age?

Adriveway is 40 yards long about how many meters long is it

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders