The table shows the number of employees preferring their own vehicle, and the percentage preferring Metro and Bus, for companies A to E. There are only three modes of transport.
| Company | Own Vehicle | Metro (%) | Bus (%) |
|---|---|---|---|
| A | 184 | 68 | 24 |
| B | 78 | 60 | 35 |
| C | 384 | 55 | 30 |
| D | 182 | 70 | 16 |
| E | 220 | 72.5 | 15 |
What is the difference between the number of employees who prefer travelling by Metro from companies D and E together and the number who prefer travelling by Bus from companies A, D and E together?
The difference is 1162, so the answer is 1162.
The totals for A, D and E are 2300, 1300 and 1760 respectively.
Metro users in D and E are 70% of 1300 plus 72.5% of 1760, which is 910 plus 1276, giving 2186.
Bus users in A are 24% of 2300, which is 552.
Bus users in D and E are 16% of 1300 plus 15% of 1760, which is 208 plus 264, giving 472.
Bus users in A, D and E total 552 plus 472, which is 1024, so the difference is 2186 minus 1024.
That difference is 1162.
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