Solve this:

Workout 9.2: 

  a. Cheenu gave 20% of his marbles to his younger brother. Cheenu's friend borrowed 25% of the 
marbles left with him. If Cheenu has given away 32 marbles in all, then 

(i) how many marbles did Cheenu have in the beginning? 
(ii) what percentage of the marbles in all did Cheenu give away? 

2. The price of sugar first increases by 20%. One month later the price decreases by 20% 
The net change in the price is: 

(a.) no change  (b) increase by 2%   (c) decrease by 2%     (d) decrease by 4 %