shakir paid $7.50 to repair a toster rather than buy a new one for $30.what percent of the cost the new toster did he save?



Q:-2) in all pakistan weight lifting competition in multan,double of the first lift of mr.sahiwal was 150 kg more than his 2nd lift and sum of two lifts was 375 kg.what was the weight of his 1st lift?


q:- 3)if x+2y=11 and 2x+3y=17 then y is ?


q:-4)if 8 is 4 percent of k, then k is 4 percent of : ?


k symbol is for real number.