下面是培臻教育小编为大家整理的一篇关于BMAT考试练习题11的文章，供大家参考，下面是详细内容。
An artist has three 100ml tubes of paint: one red,one yellow and one blue.
Mixing equal quantities of red and yellow givesorange, mixing equal quantities of red and blue gives purple, mixing equalquantities of yellow and blue gives green, and mixing equal quantities of red,yellow and blue gives brown.
The design of a small mural needs 30% of brown and20% of red, as well as 10% of
each of blue, yellow, orange, purple and green.
If after painting the mural the artist has 20ml ofpaint left in the red tube, how much blue paint will be left?
A 30ml
B 40ml
C 50ml
D 60ml
E 70ml
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