Answers by visitors named: Amitabha

Room area = 26 X 15 = 390 Sq m Carpet area = 14 X 14 = 196 Sq m Area not carpeted = 390 - 196 = 194 Sq m

Let number of families be x No. of children in with 3 = 20%x X 3 = 0.6x No. of children in with 2 = 30%x X 2 = 0.6x No. of children in with 1 = 40%x X 1 = 0.4x No. of children in with 0 = 10%x X 0 = 0 Average per house = (.6x + .6x + .4x)/x =1.6x/x =1.6

Let initial price be P and initial consumption be C. new price = P - 0.25P = 0.75P new consumption = C + 0.25C = 1.25C Initial expenditure = P.C New expenditure = 0.75P x 1.25C = 0.9375 ~ 0.94 Ratio = 0.94/1= 0.94

V=4/3 ¦Ðr^3 r -> 1.1 r V=4/3 ¦Ð¡¼(1.1r)¡½^3 V=4/3 ¦Ð x 1.331 r^3 So the increase is .331 or 33.1 %

96

Solved it!! Five options possible are: 1. abcde + abcd 2. abcde + abce 3. abcde + abde 4. abcde + acde 5. abcde + bcde But as last digit of sum is 3 then only (1) is possible. (e + e – cannot be an odd number) a must be 4 or 5 Then work out using 4 and 5. ‘a’ has to be 4. 47921 +4792 = 52713 So answer is 23 (4+7+9+2+1)