Determine the lcm of 50, 150, and 225.
a.5
b.25
c.50
d.450

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?