50
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90 ! .45 * 200 = 90
90% of 117 is 105.3
To translate the question into an algebraic expression, we write 90% as 0.9 and create the variable x to represent the number in question. 0.9 * x = 45 x = 45 / 0.9 = 50. To verify, 90% of 50 is 45.
90
1/2 of 90 is what number goes into 90 twice. For example: 1/2 of 30 is 15. 15+15 = 30. 1/2 of 90 is 45. 45+45 = 90.