8.      A tailor cut  of an inch off a skirt and  of an inch off a pair of pants. How much more did the tailor cut off the skirt than the pants?

9.      A certain Math Club makes 35 bars of laundry soap a week and sells these at $20 each. Before the soap can all be sold, the pupils found out that 6 bars were destroyed by mice. How much will be the total sale at the end of the month?

10. Band practice lasted  hours. Two thirds of the time was spent marching. How much time was spent marching?