Asked by isay
The mass of JM's father is 7/3 of JM's mass. What fraction of their total mass is JM's mass? what is the total mass if the mass of JM's father is 36 kg more than JM's mass?
Answers
Answered by
Reiny
JM's mass ---- x
Dad's mass --- 7x/3
7x/3 = x + 36
7x = 3x + 108
4x = 108
x = 27
total = x + 7x/3
= 27 + 27(7/3)
= 27 + 63
= 90 kg
Dad's mass --- 7x/3
7x/3 = x + 36
7x = 3x + 108
4x = 108
x = 27
total = x + 7x/3
= 27 + 27(7/3)
= 27 + 63
= 90 kg
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