# A coffee shop blends 2 kinds of coffee, putting in 2 parts of a 33p. a gm. grade to 1 part of a 24p. a gm.If the mixture is changed to 1 part of the 33p. a gm. to 2 parts of the less expensive grade, how much will the shop save in blending 100 gms.A.Rs.90B.Rs.1.00C.Rs.3.00D.Rs.8.00

C

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#### revo

• Dec 22nd, 2006

we have to divide given quantity of coffee in 2:1 ratiowhich results in 2/3 and 1/31st case---cost for 1 gm coffee=(2/3 gm of 33p per gm)+(1/3 gm of 24p per gm) =(2*33/3)+(24/3) =22+8=30pcost of 100 gm =3000p=Rs.302nd case---cost for 1 gm coffee=(2/3 gm of 24p per gm)+(1/3 gm of 33p per gm) =(2*24/3)+(33/3) =16+11=27pcost of 100 gm =2700p=Rs.27so, shop saved 30-27=Rs.3

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#### abdur rehman

• May 16th, 2015

2 part of 33p and 1 part of 24p,
33 + 33+ 24= 90 cost of 300 grm
now
24+24+33= 81 cost of 300 grm
90-81= 9p gain on 300 grm
3p = gain on 100 grm

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