The following table shows the age-wise brand ownership of mobile phone handsets.  Brands   1 year old   1 to 2 years old   2 to 5 years old   More than 5 years old  A 15% 45% 40%   B 5% 15% 25% 55% C 10% 10% 10% 70% D 25% 55% 20%   E 15% 50% 20% 15% If a total of 5000 'C' mobile phone sets are sold till date, then how many are more than one year old?

4200 4500 4350 4000

4500

Total number of C Brand mobile phone = 5000 Mobile phone more than 1 year old = 90% of 5000 = \(\frac{9}{10}\) × 5000 = 4500