A toy merchant announces 25% rebate in prices of balls. If one needs to have a rebate of Rs.40, then how many balls each costing Rs. 32, he should purchase? 


(a) 
5 
(b) 
6 
(c) 
7 
(d) 
10 
A toy merchant announces 25% rebate in prices of balls. If one needs to have a rebate of Rs.40, then how many balls each costing Rs. 32, he should purchase? 


(a) 
5 
(b) 
6 
(c) 
7 
(d) 
10 
Rebate on one ball = 25% of Rs. 32 = Rs = Rs. 8.
Required number of balls =