30 is 120% of what number? show ur work

400 would be your answer

Step-by-step explanation:

30% of what number = 120 is equivalent to:

30% × ? = 120

30% × ? = 120

? =

120 ÷ 30% =

120 ÷ (30 ÷ 100) =

(100 × 120) ÷ 30 =

12,000 ÷ 30 =

400

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it