Question
A box contains some purple, grey and brown sweets. The ratio of the number of purple sweets to the number of grey sweets is 1 : 3. The ratio of the number of grey sweets to the number of brown sweets is also 1 : 3. What is the ratio of the number of purple sweets to the number of brown sweets in the box?
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A box contains some purple, grey and brown sweets. The ratio of the number of purple sweets to the number of grey sweets is 1 : 3. The ratio of the number of grey sweets to the number of brown sweets is also 1 : 3. What is the ratio of the number of purple sweets to the number of brown sweets in the box?