The answer is: "40%" .
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Explanation:
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2/5 = x/ 100 ; Solve for "x" ;
Looking at the denominators:
5*(what value) = 100 ? ; 100÷ 5 = 20 ;
So "5*20 = 100" .
So; "2/5 = (2*20)/(5*20) = 40/100 = 40% .
→ Since: 40% = 40/100 = 4/10 = (4÷2)/(10÷2) = 2/5 .
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Alternate method:
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2/5 = 2÷5 = 0.4 .
0.4 = 4/10 = =(4*10)/(10*10) = 40/100 = 40% .
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Alternate method:
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Given: "2/5" ; We look at the denominator and notice it is "5" ; and we known that "5*2" = 10" ;
So, "2/5" = (2*2)/ (5*2) = 4/10 = (4*10)/(10*10) = 40/100 = 40% .
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