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1. Express 25% and 12% as decimals.
2. Express 45% and 78% as a fraction.
3. Calculate the ratio of 5 m to 20 km.
4

By Madelyn

1. Express 25% and 12% as decimals.
2. Express 45% and 78% as a fraction.
3. Calculate the ratio of 5 m to 20 km.
4. A student got 150 marks out of 200 in maths and got 120 marks out of 180 in science. In which subject did the student perform better?
5. If 72% of 25 students like maths, find out the number of students who do not like mathematics?
6. A person goes shopping and spends 75% of his money. If he is now left with Rs. 600, find out how much he had in the beginning.
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Madelyn

show that 5+3√2 is irrational

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Find the area of your living room, bed room and kitchen.

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2 thoughts on “1. Express 25% and 12% as decimals.<br />2. Express 45% and 78% as a fraction.<br />3. Calculate the ratio of 5 m to 20 km.<br />4”

  1. Answer:

    1. 0.25 and 0.12

    2. 45%= 9/20 and 78%= 39/50

    3. 5m : 20km

    = 5m : 20000m

    = 1 : 4000

    4. Maths

    5. (100-72)% = 28%

    No. of students who do not like maths

    = 28% of 25

    = 7 students

    6. Money left = (100-75)% = 25%

    ATQ,

    25% of money at beginning = ₹600

    Money he had in beginning= (600*100)/25

    = ₹2400

    Reply

  2. Answer:

    Express 25% and 12% as decimals.

    Solution:

    25% = 25/100 = 0.25

    12% = 12/100 = 0.12

    2. Express 45% and 78% as a fraction.

    Solution:

    45% = 45/100 = 9/20

    78% = 78/100 = 39/50

    Reply

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