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 By: kellywww (offline)  Sunday, January 29 2012 @ 03:18 AM CST (Read 1166 times)
kellywww

I need help with this P6 Nan Hua question! Appreciate some help :-)

I have cracked my brain but still couldn't solve it

Dolly had 80 more stickers than Jenny. Dolly gave 25% of her stickers to Jenny. Jenny in return gave 60% of her stickers to Dolly. In the end, Dolly had 100 stickers more than Jenny. How many stickers did Dolly have at first?

Thanks!

Junior

Registered: 12/31/06
Posts: 21

 By: awyw1201 (offline)  Sunday, January 29 2012 @ 09:33 PM CST
awyw1201

Quote by: kellywww

I need help with this P6 Nan Hua question! Appreciate some help :-)

I have cracked my brain but still couldn't solve it

Dolly had 80 more stickers than Jenny. Dolly gave 25% of her stickers to Jenny. Jenny in return gave 60% of her stickers to Dolly. In the end, Dolly had 100 stickers more than Jenny. How many stickers did Dolly have at first?

Thanks!

At 1st
D----4u + 80
J-----4u

Dolly gave 1/4 to Jenny
D----3u +60
J----5u + 20

Jenny gave 3/5 to Dolly
D---6u + 72
J----2u + 8

6u + 72 = 2u + 8 +100
4u =108-72 =36
1u = 9
Dolly at 1st----9 x4 +80 = 116

Ans: 116 stickers

Regular Member

Registered: 07/08/11
Posts: 87

 By: kellywww (offline)  Wednesday, February 01 2012 @ 07:05 AM CST
kellywww

Hey, greatly appreciated!
Why didn't I think of that....

Junior

Registered: 12/31/06
Posts: 21

 By: awyw1201 (offline)  Wednesday, February 01 2012 @ 08:07 PM CST
awyw1201

Quote by: kellywww

Hey, greatly appreciated!
Why didn't I think of that....

You are most welcome

Regular Member

Registered: 07/08/11
Posts: 87

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