Question

A hotel has rooms with one or two beds. Total 19 rooms and 31 beds. If e is the rooms with one bed and z is the rooms with two beds, then e-z= ?

Answer 1

its a mulple choice question...a)5 b)14 c)-14d) 24 e)-5
if that helps?

Answer 2

\[e+z=19\]
\[e+2z=31\] so
\[z=12\] and therefore
\[e=7\]

Answer 3

finally
\[e-z=7-12=-5\]

Answer 4

awesome! thank you!
i wish i listened to my teacher blahbinn more