Exam Maths Puzzle Numerical Ability Percentage

In in a city 12% of households earn less than 30000 rupees per year, 6% households earn more than 200000 rupees per year, 22% households earn more than rupees 100000 per year and 990 households earn between 30000 rupee and 100000 rupees per year. How many households earn between rupee 100000 and rupees 200000 per year?

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Exam Other Question

Simplify {(3 * 2.333 + 2)/3} / (1/10 of 100 + 4.8181) 1,2,10,....?
what is the next number in above series?