2019 · Q6
Direction: Read the following information and answer the four items that follow: Let the distribution of the number of scooters of companies X and Y sold by 5 showrooms (A, B, C, D and E) in a certain year be denoted S1 and the distribution of the number of scooters of only company X sold by the five showrooms in the same year be denoted by S2.
| Showroom | A | B | C | D | E | Total scooters sold |
|---|---|---|---|---|---|---|
| S1 (both companies X and Y, in %) | 19 | 21 | 15 | 33 | 12 | 6400 |
| S2 (only company X, in %) | 24 | 18 | 20 | 30 | 8 | 3000 |
What is the difference between the number of scooters of company X and Y sold by showroom A and the total number of scooters of company X sold by showrooms B and E together?
Elementary MathematicsStatistics
- A416
- B426
- C432
- D436
Explanation
X and Y sold by A together = total sold by A = 19% of 6400 = 1216. Company X sold by B and E together = 18% of 3000 + 8% of 3000 = 540 + 240 = 780. Difference = 1216 - 780 = 436.