Problema Solution
1. A man has a body mass of mkg.he is 30kg heavier than each of his twin children express the body mass of each child in terms of m if the mass of the father and children comes to 156kg find the mass of the father
Answer provided by our tutors
mass of the father: m
and he is 30kg heavier than each child so that is:
m= 30kg + mass of each child
therefore mass of each child= m - 30kg
Now, if the m plus the mass the twins totals to 156kg, then:
156kg = m + 2(mass of each child)
156kg = m + 2(m - 30kg)
156kg = m + 2m -60kg
156kg = 3m -60kg
60kg + 156kg = 3m
216kg = 3m
216kg/3 = 3m/3
m = 72