Math

Mrs Allen spends 3/5 of her money at the grocery store. Next she spends 3/5 of her remaining money at the petrol station. She then has $8.00 left.

I know the answer is $50
BUT I need to explain why its right
please explain on a yr 7 level would be helpful!

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  1. She spends 3/5 of her money, so she had 2/5 of it left
    Then she spends (3/5) of her remaining money, which would leave her with (2/5)(2/5) = 4/25 of her money

    so 4/25 of her money equals 8
    1/25 of her money equals 8/4
    then 25/25 of the money equals 25(8/4) = 50

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  2. thank you! U have saved the day!!!

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  3. its 50

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  4. First, you need to find out 5/5 of 8. Since 8 is 2/5 of 5/5, you need to do 8 divided by 2, which is 4. know you need to do 4*3 which is 12, then 12+8=20. now since 20 is 2/5 of what we are trying to find, we need to do 20 divided by 2, which is 10. Now you do 10*3=30 since we have 3/5 left, and add 30 and 20 together which makes 50.

    1. 4*2=8
    2. 4*3=12
    3. 8+12=20
    4. 10*2=20
    5. 10*3=30
    6. 30+20=50

    P.S. I am a kid so forgive me if anything I said made no sense.

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  5. thanks so much everyone here i appreciate the help google thanks

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