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Daily Mail Mindbender Thu 3Rd December

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ginger1945 | 13:18 Sat 05th Dec 2015 | Quizzes & Puzzles
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One day Santa gives each girl ten sweets and each boy 10 sweets.
Of 439 children - four fifths girls and two thirds boys are allowed to take sweets. If he started with 4000 sweets, how many has he left?
How is the answer 488 derived please
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Colleague advises that 439 must be in ratio 5 and 3 like the fractions. The only fit is 250 and 189
Santa gives ten sweets to four-fifths of the girls, and twelve sweets to two thirds of the boys.

There are 439 children in total, and he started the day with 4000 sweets.

10 x 4/5 g = 8g (so this averages out at 8 sweets per girl)
12 x 2/3 b = 8b (so this averages out at 8 sweets per boy)

This therefore averages out at 8 sweets per child. 439 x 8 = 3512.

4000 - 3512 = 488
The qn says 10 sweets to each boy!

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