The average number of visitors of a library in the first 4 days of a week was 58. The average for the 2nd, 3rd, 4th and 5th days was 60.If the number of visitors on the 1st and 5th days were in the ratio 7:8 then what is the number of visitors on the 5th day of the library?	Choose the correct answer: A) 17 B) 17 C) 64 D) 19 E) 01
If number of visitors on 1st, 2nd, 3rd, 4th &amp; 5th day are a, b, c, d &amp; e respectively, then   a + b + c + d = 58 × 4 = 232 ----(i) &amp;   b + c + d + e = 60 × 4 = 240 ----(ii)   Subtracting (i) from (ii), e – a = 8 ---(iii)   Given   a/e=7/8 ---(iv)   So from (iii) &amp; (iv) a=56, e=64   Answer:64
<result>C</result>
The average number of visitors of a library in the first 4 days of a week was 58. The average for the 2nd, 3rd, 4th and 5th days was 60.If the number of visitors on the 1st and 5th days were in the ratio 7:8 then what is the number of visitors on the 5th day of the library?