Question:
A basket contained red, blue and yellow balls only. The ratio of the number of red balls to the number of blue balls is 4 : 3. The ratio of the number of blue balls to the number of yellow balls is 2 : 3.
a) Find the ratio of the number of yellow balls to the number of red balls.
b) After 15 yellow balls were removed, 30% of the remaining balls were yellow. How many balls were left in the basket?
Solution:
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