The masses

The masses of a mother and a daughter differ by 30kg and are in the ratio of 8:5. Find the mass of each.

Correct answer:

a =  80 kg
b =  50 kg

Step-by-step explanation:

a:b=8:5=1.6  ab=30 5a=8b  ab=30 5 a=8 b  ab=30 5a8b=0  Pivot:Row1Row2 5a8b=0 ab=30  Row251 Row1Row2 5a8b=0 0.6b=30  b=0.630=50 a=50+8b=50+8 50=80=80 kg  a=80 b=50



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