Question
15.8% of 9000 + 20.4% of 7500 = 30% of ?
What value should come in place of the question-mark(?) in the following questions:Solution
15.8% of 9000 – 20.5% of 7500 = 30% of ? `158/1000`  9000 - `204/1000`   `xx`  7500 = 30% of ? 1422 + 1530 = `30/100`  `xx`    ? 2952 = = `30/100`  `xx`    ? ? = 9840
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