A person purchases 1 kg of tomatoes from each of the 4 places at the rate of 1 kg, 2 kg, 3 kg, 4 kg per rupee respectively. On an average, he has purchased `x` kg of tomatoes per rupee. Then the value of `x` is (a) 1.92 (b) 2 (c) 2.5 (d) None of these

Options

A. 2
B. 25
C. 1.92
D. none of these

Answer

C

Explanation

Since we are given rate per rupee. So, the harmonic mean will given us the correct value of x.
`therefore x = H.M. " of "1,2,3,4`
`x=(4)/((1)/(1)+(1)/(2)+(1)/(3)+(1)/(4))=(48)/(12+6+4+3)=(48)/(25)=1.92` kg per rupee