Qstnid -A-3- Find: (I) 45 Is What Percent Of 54? (Ii) 2.7 Is What Percent Of 18? (Ii) 2.7 Is What Percent Of 18? (I) 45 Is What Percent Of 54? (Ii) 2.7 Is What Percent Of 18? (Ii) 2.7 Is What Percent Of 18? - 07: Percent And Percentage Class 8 Maths - Icse-viii-mathematics

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ICSE-VIII-Mathematics

07: Percent and Percentage Class 8 Maths

with Solutions - page 2

Qstn# A-3 Prvs-Qstn Next-Qstn

#3
Find: (i) 45 is what percent of 54? (ii) 2.7 is what percent of 18? (ii) 2.7 is what percent of 18? (i) 45 is what percent of 54? (ii) 2.7 is what percent of 18? (ii) 2.7 is what percent of 18?
Ans : (i) Let 45 = x percent of 54 = (54 × x)/100
⇒ x = (45 × 100)/54 = (5 × 100)/6
= 250/3 = 83 1/3%
∴ Reqd. percentage = 83 1/3% (ii) Let 2.7 = x percent of 18 = (18 × x)/100
∴ x = (2.7 × 100)/18 = 270/18 = 30/2 = 15
∴ Reqd. percentage = 15% (ii) Let 2.7 = x percent of 18 = (18 × x)/100
∴ x = (2.7 × 100)/18 = 270/18 = 30/2 = 15
∴ Reqd. percentage = 15% (i) Let 45 = x percent of 54 = (54 × x)/100
⇒ x = (45 × 100)/54 = (5 × 100)/6
= 250/3 = 83 1/3%
∴ Reqd. percentage = 83 1/3% (ii) Let 2.7 = x percent of 18 = (18 × x)/100
∴ x = (2.7 × 100)/18 = 270/18 = 30/2 = 15
∴ Reqd. percentage = 15% (ii) Let 2.7 = x percent of 18 = (18 × x)/100
∴ x = (2.7 × 100)/18 = 270/18 = 30/2 = 15
∴ Reqd. percentage = 15%

#3-i
45 is what percent of 54? (ii) 2.7 is what percent of 18?
Ans : Let 45 = x percent of 54 = (54 × x)/100
⇒ x = (45 × 100)/54 = (5 × 100)/6
= 250/3 = 83 1/3%
∴ Reqd. percentage = 83 1/3% (ii) Let 2.7 = x percent of 18 = (18 × x)/100
∴ x = (2.7 × 100)/18 = 270/18 = 30/2 = 15
∴ Reqd. percentage = 15%

#3-ii
2.7 is what percent of 18?
Ans : Let 2.7 = x percent of 18 = (18 × x)/100
∴ x = (2.7 × 100)/18 = 270/18 = 30/2 = 15
∴ Reqd. percentage = 15%