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8 February, 12:07

Kate gave 5/6 of her CD's to Sue. Sue gave 7/8 of these to Joan. Joan gave 3/5 of these to Ann. If Ann recieved 70 CDs, how many did Kate have originally?

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  1. 8 February, 13:50
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    70=3/5

    times 5/3

    350/3

    this is 7/8

    350/3=7/8

    times 8/7 both sides

    400/3

    that is 5/6

    400/3=5/6 of total

    times 6/5 both sides

    800/5=160

    kate had 160 originally
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