Quantitative Aptitude :: Problems on Numbers - Discussion

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Explanation:
If number of visitors on 1st, 2nd, 3rd, 4th and 5th day are a, b, c, d and e respectively then
a + b + c + d = 58 * 4 = 232 - - - (i)
b + c + d + e = 60 * 4 = 240 - - - (ii)
Subtracting (i) from (ii)
e - a = 8 - - - (iii)
Given that e : a = 8 : 7
Let e = 8x and a = 7x.
Given, 8x - 7x = 8 => x = 8 - - - (iv)
So a = 56 and e = 64.