A disc jockey plays only hip-hop and country-western records. If the disc jockey plays four country-western records for

A disc jockey plays only hip-hop and country-western records. If the disc jockey plays four country-western records for every seven hip-hop records, what fraction of the records he plays are country-western?

A. $\dfrac45$

B. $\dfrac7{11}$

C. $\dfrac47$

D. $\dfrac4{11}$

E. $\dfrac1{28}$

Answer: D

Source: Princeton Review

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