Albert buys 4 horses and 9 goats for $ 13,400. If he sells the horses at 10% profit and the goats at 20% profit, then he earns a total profit of $ 1880. The cost of a horse is:  Options
A) $ 3000	B) $ 6000	C) $ 2000	D) $ 8000	E) $ 7000
C   $ 2000   Let C.P. of each horse be $ x and C.P. of each cow be $ y.   Then, 4x + 9y = 13400 -- (i)   And, 10% of 4x + 20% of 9y = 1880   2/5 x + 9/5 y = 1880 =&gt; 2x + 9y = 9400 -- (ii)   Solving (i) and (ii), we get : x = 2000 and y = 600.   $ 2000ost price of each horse = $ 2000.
<result>C</result>
Albert buys 4 horses and 9 goats for $ 13,400. If he sells the horses at 10% profit and the goats at 20% profit, then he earns a total profit of $ 1880. The cost of a horse is: