Apple-trees, pears and plums grow in a garden. Apple-trees make 8/15 all trees, pears - 4/15 all trees, and number of plums exactly 12. How many trees in a garden? How many in it apple-trees and how many pears?

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1 way: 1) 1-8/15-4/15=3/15chasti-plums. 2) 12:3/15=60 (e) - Only. 3) 60*8/15=32 apple-trees. 4) 60*4/15=16 pears. Answer: in a garden 60 trees, 32 apple-trees and 16 pears. The 2nd way: 1) 8/15 + 4/15 = 12/15 - apples and pears 2) 15/15 - 12/15 = 3/15 - 12 plums 3) 12: 3 = 4 () - 1/15 4) 4 * 8 =32 () - apples 5) 4 * 4 = 16 () - pears 6) 12 + 32 + 16 = 60 () - all Answer: 32 apple-trees; 16 pears; 60 trees of all.
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