Weights

Marry and John together, weighing 49 kg. Their weights are in a ratio of 1:6. Determine their weights.

Correct answer:

m =  7 kg
j =  42 kg

Step-by-step explanation:


m+j = 49
6m=1j

m+j = 49
6·m=1·j

j+m = 49
j-6m = 0

Row 2 - Row 1 → Row 2
j+m = 49
-7m = -49


m = -49/-7 = 7
j = 49-m = 49-7 = 42

j = 42
m = 7

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