What's the percent from change from 60 to 90

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Name the most appropriate metric unit for each measurement

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other