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Q: The number of plain books sold by store A and store B was 30% and 40% respectively then find a number of lined books sold by store A and store B together is what percent of total books available at store A?

A. $$ 23{4\over 7}\%$$
B. $$ 25{5\over 7}\%$$
C. $$ 22{6\over 7}\%$$
D. 0.25
E. None of these
Answer» C. $$ 22{6\over 7}\%$$


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