20. Aaron says his age is 50 years, 50 months, 50 weeks and 50 days old. What age will he be on his next birthday?
A 56
B 55
C 54
D 53
E 51
Solution: A
50 months is 4 years and 2 months. 50 weeks is around $11 \frac{1}{2}$ months and 50 days is about $1 \frac{2}{3}$ months. So Aaron's age is approximately $(50+4)$ years $+\left(2+11 \frac{1}{2}+1 \frac{2}{3}\right)$ months $=54$ years $+15 \frac{1}{6}$ months $=55$ years and $3 \frac{1}{6}$ months. So he will be 56 on his next birthday.