HomeLearn Fast select Course
Show Unit/ChapterChange UnitChange SubjectLast Menu
ICSE-VIII-Mathematics

07: Percent and Percentage Class 8 Maths

with Solutions - page 2
Qstn# A-4-i Prvs-QstnNext-Qstn
  • #4-i
    252 is 35% of a certain number, find the number. (ii) If 14% of a number is 315; find the number. (ii) If 14% of a number is 315; find the number. (ii) If 14% of a number is 315; find the number.
    Ans : Let the number be x
    By the given condition,
    252 = (x × 35)/100 = (x × 7)/20
    ∴ x = (252 × 20)/7 = 36 × 20 = 720
    Hence reqd. number = 720 (ii) Let the number be x
    By the given condition,
    315 = (x × 14)/100
    ∴ x = (315 × 100)/14
    = (45 × 100)/2
    = 45 × 50
    = 2250
    Hence, reqd. number = 2250 (ii) Let the number be x
    By the given condition,
    315 = (x × 14)/100
    ∴ x = (315 × 100)/14
    = (45 × 100)/2
    = 45 × 50
    = 2250
    Hence, reqd. number = 2250 (ii) Let the number be x
    By the given condition,
    315 = (x × 14)/100
    ∴ x = (315 × 100)/14
    = (45 × 100)/2
    = 45 × 50
    = 2250
    Hence, reqd. number = 2250
  • #4-ii
    If 14% of a number is 315; find the number.
    Ans : Let the number be x
    By the given condition,
    315 = (x × 14)/100
    ∴ x = (315 × 100)/14
    = (45 × 100)/2
    = 45 × 50
    = 2250
    Hence, reqd. number = 2250