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17 December, 18:02

There are only blue sweets, green sweets and red sweets in a box. The ratio of the number of blue sweets to the number of green sweets is 2:7. The ratio of the number of green sweets to the number of red sweets is 3:1. There are less than 140 sweets in the box. What is the greatest possible number of red sweets in the box?

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  1. 17 December, 19:10
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    At least there are 6 green sweet (2*3) so there are 6/2*7=21 blue ones and 6/3=2 red ones

    6+21+2=29

    139:29=4.7 ...

    29*4=116

    The greatest possible number is 116
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