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A TRAILMIX RECPE CALLS FOR 1/3 POUND OF MIXED NUTS, 4/15 POUND OF RAISINS, AND 2/5 POUNDS OF GRANOLA. WHAT IS THE RATIO OF RAISINS TO MIXED NUTS IN SIMPLEST FORM

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altavistard
Find the ratio of 4/15 lb to 1/3 lb:

4
--
15
-------
1
--
3

Invert the divisor (1/3) and multiply:

4        3
--   * ---- = 4:5  (this is the desired ratio)
15      1

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