Proportion

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  • Q1

    If 10 bananas costs Rs 20, find the cost of 7 bananas.

    Marks:2
    Answer:

    Cost of 10 bananas = Rs 20
    Cost of 1 banana = Rs 20/10 = Rs 2
    Cost of 7 bananas = Rs 7 2 = Rs 14

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  • Q2

    If we divide Rs 20 between Jatin and Arnav in the ratio 3 : 2, how much will each of them get?

    Marks:2
    Answer:

    Sum of the two terms of the ratio (3 : 2) = 3 + 2
    = 5
    Jatin's share = (3/5) 20
    = Rs 12
    Arnav's share = (2/5) 20
    = Rs 8

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  • Q3

    In a school of 1800 students, 600 are girls. Find the ratio of boys to the total number of students.

    Marks:2
    Answer:

    Total no. of students in the school = 1800
    Total no. of girls = 600
    Total no. of boys = 1800 – 600 = 1200
    Required ratio = 1200 : 1800 = 2 : 3

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  • Q4

    The length, breadth and height of a building is 200 m, 175 m and 150 m respectively. Find the ratio of
    (i) length: breadth
    (ii) length: height

    Marks:2
    Answer:

    Length of the building = 200 m

    Breadth of the building = 175 m

    Height of the building = 150 m

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  • Q5

    A company manufactures 1000 bulbs per month on an average. It was found out that 50 bulbs were defective in a certain month. Find out the ratio of defective bulbs to the number of bulbs produced.

    Marks:2
    Answer:

    No. of defective bulbs = 50
    No. of total bulbs = 1000
    Required ratio = 50 : 1000
    = 1 : 20.

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