The following table represents the number of computers (in thousands) manufactured by four companies during the periods from 2010 to 2014:
| Years | A | B | C | D |
| 2010 | 240 | 120 | 270 | 280 |
| 2011 | 300 | 530 | 490 | 650 |
| 2012 | 1250 | 650 | 430 | 710 |
| 2013 | 470 | 320 | 1180 | 890 |
| 2014 | 320 | 1070 | 550 | 480 |
What is the difference (in thousands) between the number of computers manufactured by company A and C during the period from 2010 to 2014?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 340.
Total number of computers manufactured by Company A = 240 + 300 + 1250 + 470 + 320 = 2580 thousands
Total number of computers manufactured by Company C = 270 + 490 + 430 + 1180 + 550 = 2920 thousands
Difference = 2920 - 2580 = 340 thousands