6 blue marbles for every 5 purple marbles. If a bag has 45 purple marbles, how many blue marbles does it contain.?

2016-10-30 4:41 am

回答 (2)

2016-10-30 4:42 am
54
2016-10-30 4:48 am
 
Use ratios:

x/45 = 6/5
x = 45 * 6/5
x = 54

Bag contains 54 blue marbles


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