1.

An airplane maintaining a constant airspeed takes as long to travel 755

755 mi with the wind as it does to travel 645

645 mi against the wind. If the wind is blowing at 11

11 mph, what is the rate of the plane in stillair?

2.

Sue, an experienced shippingclerk, can fill a certain order in 5

5 hours. Felipe

Felipe, a newclerk, needs 6

6 hours to do the same job. Workingtogether, how long will it take them to fill theorder?

3.

One-fourth fourth of a number is 2, 2 more than one-sixth

sixth of the same number.

What is thenumber?