ANSWER : 16

Explanation : : Let S.P of 20 toffees be Rs.x,then 96:10=120:x 96/10:120/x (or) x=120 x 10 /96 =25 /2 For Rs.25/2,toffees sold=20 For Rs.10;toffees sold =20 x 2 x 10/ 25=16 toffees

ANSWER : 33 1/3

Explanation : : Let C.P of each article be Rs.1 C.P of 9 articles =Rs.9 S.P of 9 articles=Rs.12 Profit=12-9/9 x 100%=3/9 x 100=33 1/3 %

ANSWER : Neither gain nor loss

Explanation : : 6/7 of its C.P=Rs 144 C.P=144 x 7 / 6=168 A man selling it for C.P,there is no gain (or) loss

ANSWER : 12.5

Explanation : : 80% of marked price=90% of C.P 100% of marked price=? =100/80 x 90=112.5 of C.P Profit=112.5-100=12.5%

ANSWER : 20 kg

Explanation : : S.P of 1 kg mixture=Rs.14 gain=5% C.P of 1 kg mixture=Rs.14 x 100/105=Rs.40/3 By the rule of alligation,we have C.P of 1 kg rice of C.P of 1 kg of 1st kind 2nd kind (10) (15) \ / \ / \ / \ / Mean price (40/3) / \ / \ / \ 5/13 10/3 Rice of 1st kind:Rice of 2nd kind =5:10 Let 10 kg of rice of 1st kind be mixed with x kg of rice of 2nd kind then, 5:10=10:x (or) x=10x10 / 5 =20 kg