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.
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90 ! .45 * 200 = 90
90% of 117 is 105.3
200% of a number is 90, so 100% of a nubmer is 45, so 45 is 80% 0f a number therfore a number is 45/80*100=225/4
Yes.90% of 45= 90% * 45= 0.9 * 45= 40.5
40.5 is 45% of 90.