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A hint!
What number is 25% of 20 :(25/100)*20 = 500/100 = 5;
30 is 60% of what number :30 = (60/100)*x ; 30*100 = 60x ; 3000 = 60x ; x = 3000/60 ; x = 50;
What percent of 50 is 30: p/100 = 30/50 ; p/100 = 3/5 ; p = 300/5; p = 60; p% = 60%;
What number is 25% of 20 :(25/100)*20 = 500/100 = 5;
30 is 60% of what number :30 = (60/100)*x ; 30*100 = 60x ; 3000 = 60x ; x = 3000/60 ; x = 50;
What percent of 50 is 30: p/100 = 30/50 ; p/100 = 3/5 ; p = 300/5; p = 60; p% = 60%;