a) Rs. 3200
b) Rs. 4200
c) Rs. 4000
d) Rs. 5400
Answer: d
Explanation: M graze 16 cows for 3 months
N graze 20 cows for 4 months
O graze 18 cows for 6 months
P graze 42 cows for 2 months
Ration of Rent = M : N : O : P
= (16 × 3) : (20 × 4) : (18 × 6) : (42 × 2)
= 48 : 80 : 108 : 84
= 12 : 20 : 27 : 21
$$\eqalign{
& {\text{12 units}} = {\text{Rs}}{\text{. 2400}} \cr
& {\text{1 unit}} = \frac{{2400}}{{12}} \cr
& 27{\text{ units}} = \frac{{2400 \times 27}}{{12}} \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = {\text{Rs}}{\text{. }}5400 \cr} $$
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