tavaris021 tavaris021

20-11-2017
Mathematics

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40% of the marbles in the bag are yellow. the rest are orange and green. the ratio of the number of orange to the number of green is 4:5. if there are 30 green Marbles, how many yellow marbles are there?

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ankastre ankastre

20-11-2017

Hi.. Try this;

30/5 = 6

4x6 = 24 Orange marbles

30+24 = 54

If x = total # of marbles

40/100x = x-54

40x/100 = x-54

40x = 100x - 5400

x= 90

90-54= 36 yellow marbles

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