College

At the college are at 57 rooms 194 students. Some rooms are triple and some quad. How many triple and quadruple rooms there is, if it is all fully occupied?

Result

x3 =  34
x4 =  23

Solution:

57=x3+x4 194=3x3+4x4  x3=34 x4=2357 = x_3+x_4 \ \\ 194 = 3 x_3 +4 x_4 \ \\ \ \\ x_3=34 \ \\ x_4=23



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