Answer:
?×
(
1
−
50/
100
)
×
(
1
−
10/
100
)
=
$
315 ?
=
$
315
/(
.5
)
(
.9
)
=
$
700
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
The answer is 200. you would multiply 1000 by 80% giving you 800. 800 people didnt know the name so that leave 200 people did.
Answer:
the number of single room is 27 and the number of double room is 53
Step-by-step explanation:
Let x is the number of single room
Let y is the number of double room
We know that:
x + y = 80 <=> x = 80 -y (1)
80x +90y= 6930 (2)
Substitute (1) in (2) we have:
80 (80 - y) + 90y = 6930
<=> 6400 - 80y +90y = 6930
<=> y = 53
> x = 80 - 53 = 27
the number of single room is 27 and the number of double room is 53
