+0  
 
0
18
1
avatar

A hotel has 260 rooms. Some are singles, and some are doubles. Thesingles cost 35 and the doubles cost 60. Because of a math teachers' convention, all of the hotel rooms are occupied. The sales for this night are
14,000. How many double rooms does the hotel have?

 Feb 15, 2021
 #1
avatar+268 
0

s + d = 260

 

35s + 60d = 14000

35s = 14000 - 60d

s = 400 - 12d/7

 

s + d = 260

(400 - 12d/7) + d = 260

-12d/7 + d = -140

-12d + 7d = -980

-5d = -980

d = 196

 

s + d = 260

s + (196) = 260

s = 64

 

The hotel has 196 double rooms :)

 Feb 15, 2021

85 Online Users

avatar
avatar
avatar
avatar
avatar
avatar