The required value of x = 7. Hence option C. is correct.
What is the Ratio?
The ratio can be defined as the comparison of the fraction of one quantity towards others. e.g.- water in milk.
Since, ABC~DEF
The ratio of their side are equal.
BC/AB = EF/DE
42/30 = x/5
x = 7
Thus, the required value of x = 7.
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brainly.com/question/13419413
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