7. The average age of three members in a team, A, B, and C, 3 years ago was 33 years and that of B and C, 7 years ago was 35 years. Find the present age of A
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avg age 3 years ago= 33
total age 3 years ago=33*3=99
total age now=99+3+3+3=108
avg age of B and C 7 years ago=35
total age of B and C 7 years ago=35*2=70
age of B and C now=70+7+7=84
sum of ages of all 3(present)=108
B+C(now)=84
A's age now=24
total age 3 years ago=33*3=99
total age now=99+3+3+3=108
avg age of B and C 7 years ago=35
total age of B and C 7 years ago=35*2=70
age of B and C now=70+7+7=84
sum of ages of all 3(present)=108
B+C(now)=84
A's age now=24
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