Mathematics
WalterVanstone
2015-11-21 23:12:27
one week, the ratio of pounds of apples to pounds of oranges sold at a market was 3:8. Twelve pounds of apples were sold. how many pounds of oranges were sold? (i got 4 pounds, is it right) please help and thanks.
ANSWERS
diamond44
2015-11-22 02:03:41

3 : 8....can be written as 3/8 12 lbs of apples were sold apples / oranges : 3/8 = 12/x this is a proportion, so we cross multiply (3)(x) = (12)(8) 3x = 96 x = 96/3 x = 32 <=== 32 lbs of oranges notice that 3/8 = 12/32....these are equivalent fractions....because that is what proportions are, equivalent fractions

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