A house has 4400 square feet. The bedroom occupy 2/5 of the space, the living and dining rooms occupy 1/5 of the space, the garage represent 1/10 of the space and the balance is split evenly among three bathrooms and the kitchen. If the owner wants to increase the size of the garage by 1/8, how many total square feet the new garage have?

An airplane travels 3600 miles from city A to city B. On the way back, the airplane speed was 50% more than its outbound speed. If the total time for the trip was 10 hours what was the outbound speed?

Craig owns a ready mis concrete company. Craig receives an order for 1.5 cubic yards of concrete. This mixture of concrete contains sand, cement, gravel, and water; for each pound of water, there are 5lb of sand, 2lb of cement, and 7lb of gravel. Find the total weight of the order (in pounds), assuming a cubic yeard of concrete weighs 4000 lb, and how many pounds of each ingredient must be used. answer in the back of the book is:  water: 400lb sand: 2000lb cement: 800lb gravel: 2800lb please help me set up the equations needed to solve the problem and get the answers given.

For landscape maintenance Gretchen Green uses 4 pounds of fertilizer for every 200 square feet of lawn. At this rate, how many pounds of fertilizer did she use on a lawn that measures 8600 square feet? Round to the nearest whole number. ​