Accommodated 15223

A total of 17 pupils are accommodated in 5 rooms in the dormitory. Some rooms are triple, some quadruple. Determine how many pupils are accommodated in triple rooms.

Correct answer:

x =  9

Step-by-step explanation:


x/3+y/4 = 5
17 = x+y

4x+3y = 60
x+y = 17

Row 2 - 1/4 · Row 1 → Row 2
4x+3y = 60
0.25y = 2


y = 2/0.25 = 8
x = 60-3y/4 = 60-3 · 8/4 = 9

x = 9
y = 8

Our linear equations calculator calculates it.



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