First thing first, you have to use the proportion formula(is over of is a percent over 100).
Is=40 Of= n,
%= 30.
After setting that up and everything, your answer is 140.
140 ;
42 is 30% of 140. To find this, we rearranged the percentage formula and solved for the whole number. This calculation shows how percentages relate parts to wholes in mathematical contexts.
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