Question

The coach of a cricket team buys3 bat and 6 balls for rs.3900.Later she buys another bat and 3 more balls of the sae kind for rs. 1300.represent this situation aalgebraically and geometrically.

Answer 1

cost of a bat :  Rs x
cost of a ball :  Rs y

   3 bats  and  6  balls  cost:  Rs 3, 900 = 3 x + 6 y    --- equation 1
           also,  Rs 1, 300 =  x + 3 y                     --- equation  2

algebraically the above equations represent the situation.
     eq 1  - 2 *  eq 2  =  1300  = x          and then     y = 0