Math
posted by Help please.. on .
Tom needs carpet for his living room (11x 10 ft) and his bedroom room (20 x 16 ft). At $14.99 per square yard installed or $19.99 per square yard installed. How much would he save by choosing the cheaper carpet?

area = 11*10 + 16*20 or 430 square feet
There are 9 square feet in 1 square yard.
divide by 9, then multiply by each unit cost
subtract the two costs to find the savings. 
430 /9= 47.777
47.78*19.99=955.12 less
47.78*14.99 =716.22
Answer $238.90 he would save ... Correct? 
yes, arithmetically you are correct,
comment:
What do you think would happen if you went into a store and asked for 47.7777 square yards of carpet?
I wish textbook authors would think before they make up such unrealistic problems.
e.g. most likely you will have to buy a carpet which is 12 ft wide, and have waste.
For the other room you might even have to join different widths. 
Haha ... Ok. Thanku soo much!