Ski lessons

On the ski course leaves 80 pupils. They live in triple and quadruple rooms. Count if rooms is the 23. How many are triple and quadruple rooms?


x =  12
y =  11


3x+4y = 80
x+y = 23

3x+4y = 80
x+y = 23

x = 12
y = 11

Calculated by our linear equations calculator.

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