Question: A tour group of 50 people checked into this hotel and stayed in some triple ordinary rooms and double ordinary rooms. I didn’t see that the guest rooms were fully occupied. If the tour grou

Question: A tour group of 50 people checked into this hotel and stayed in some triple ordinary rooms and double ordinary rooms. I didn’t see that the guest rooms were fully occupied. If the tour group

Triple room a Double room b

a * 3 + b * 2 = 50

a * 150 + b * 140 < 3000

< p>b = (50-3a)/2

150a + 3500 -210a < 3000

60a > 500

a is an integer, a>8 < /p>

Triple ordinary rooms are no more than double ordinary rooms

a <= b

2a +3a <=50

a<= 10

a=9 b=11.5 cannot be filled.

Only a = 10 b=10 Number of people 50

Cost 2900