Letter D.
Congruent shapes have the same angles, proportions, etc. but they're not always the same size.
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Answer: a) 6000
reason:
if 7 out of 10 doctors prefer cough up syrup, then that means 4200 is 7/10ths of the doctors
divide 4200 by 7 to get 600
then, multiply 600 by 10 to get 6000, the total number of doctors
This answer would be A hope this helps
