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Wednesday, February 17, 2010

Nanyang Pri Sch 2009 P6 CA1 Math Paper 2 Q3

The ratio of the number of Chloe's stickers to the number of Faith's stickers is 3:5. The ratio of the number of Faith's stickers to Melissa's stickers is 6:7. If Melissa has 204 stickers more than Chloe, how many stickers do they have altogether?

Solution


Melissa - Chloe --> 204
35 units - 18 units --> 204
17 units --> 204
1 unit --> 204 divided by 17 = 12

All stickers
Chloe + Faith + Melissa
18 + 30 + 35 = 83
83 units --> 83 x 12 = 996

Answer: 996 stickers

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