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Chapter Summary Per cent means foe every hundred. fifty percent means fifty for every hundred.so a fraction whose denominator is 100, is called a percentage and the numerator of the fraction is known as the rate of percentage. it is generally written by %.Example: 60% of 35 is what percent of 400?Answer : \( 5 { 1 \over 4 }\)explanation :let \(x\) % of 400 is the 60% of 35. putting in the equation.\( {60 \times {35 \over 100}} = {x \times {400 \over 100}} \) \( {{60 \times 35} \over 100} = 4x \) \( x = {{6 \times 35} \over {10 \times 4}} \)\( x = {42 \over 8} = { 5 {1 \over 4}}\) Ans.