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?
1 answer:
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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