Thursday, February 18, 2010

All marble bags from John's Marble Company have 7 orange marbles for every 5 clear marbles. If a bag has 63?

All marble bags from John's Marble Company have 7 orange marbles for every 5 clear marbles. If a bag has 63 orange marbles, how many clear marbles are there in the bag?All marble bags from John's Marble Company have 7 orange marbles for every 5 clear marbles. If a bag has 63?
45 CLEAR MARBLES ARE THERE IN THE BAGAll marble bags from John's Marble Company have 7 orange marbles for every 5 clear marbles. If a bag has 63?
the ratio of orange to clear marbles in the bag is 7:5, say the number of clear marbles is X and number of orange marbles is 63, then X would be





Nc = (5 x 63)/ 7 = 45
Ratio of Orange : Clear = 7 : 5





You have 63 : x





7 x 9 = 63, so x = 5 x 9 = 45





So there are 45 clear marbles.
45 clear marbles because 7x9=63 so 5x9=45
there are 45 clear marbles in the bag.


(63/7*5) gives the answer.

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