The table shows the percentage distribution of five mobile phone models (A to E) produced in 2021 and 2022. Total produced: 4,50,000 in 2021 and 5,20,000 in 2022.
| Model | 2021 (%) | 2022 (%) |
|---|---|---|
| A | 15 | 10 |
| B | 25 | 30 |
| C | 30 | 25 |
| D | 10 | 25 |
| E | 20 | 10 |
If 85% of the number of Model-E mobile phones produced by the company during 2021 and 2022 were sold, then how many Model-E mobile phones were left unsold by the company?
A142800
B21300 ✓ Correct
C29100
D25200
Correct answer: (B) 21300
Explanation
About 21,300 Model-E phones were left unsold, so the answer is 21,300.
Model-E phones in 2021 are 20% of 4,50,000, which is 90,000.
Model-E phones in 2022 are 10% of 5,20,000, which is 52,000.
The total Model-E production is 90,000 plus 52,000, which is 1,42,000.
If 85% were sold, then 15% remain unsold.
The unsold count is 15% of 1,42,000, which is 21,300.
The value 1,42,800 mistakes the whole production for the unsold portion.
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