In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:
2700
2900
3000
3100
Explanation:
Number of valid votes = 80% of 7500 = 6000.
$\therefore$ Valid votes polled by other candidate = 45% of 6000
=$ \left(\dfrac{45}{100} \times 6000\right) $= 2700.