The dormitory

The dormitory accommodates 150 pupils in 42 rooms, some of which are triple and some are quadruple. Determine how many rooms are triple and how many quadruples.

Result

a =  18
b =  24

Solution:

a+b = 42
3a+4b = 150

a+b = 42
3a+4b = 150

a = 18
b = 24

Calculated by our linear equations calculator.

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