find a in each of the following proportion :
a) a : 85 : : 57 : 95
b) a : 6 : : 55 : 11
c) 7 : 12 : : a : 24
d) 30 : 40 : : 45 : a
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Answer:
a) 47
b)30
c)19
d)55
Explanation:
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