Percentage distribution of production of six laptop models A–F in 2019 and 2020. Totals: 35 lakh (2019), 44 lakh (2020).
| Model | 2019 (%) | 2020 (%) |
|---|---|---|
| A | 30 | 40 |
| B | 15 | 20 |
| C | 20 | 15 |
| D | 10 | 10 |
| E | 15 | 10 |
| F | 10 | 5 |
If 90 percent of the Model-D laptops produced in each year were sold, how many Model-D laptops remained unsold in the two years together?
A76500
B93500
C79000 ✓ Correct
D87000
Correct answer: (C) 79000
Explanation
The answer is 79000.
Model-D was 10 percent in each year, so 3.5 lakh in 2019 and 4.4 lakh in 2020.
With 90 percent sold, 10 percent stays unsold each year.
So 2019 leaves 0.35 lakh, which is 35000.
And 2020 leaves 0.44 lakh, which is 44000.
The total unsold is 35000 plus 44000, which is 79000.
So the answer is 79000.
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