Question

Exchange :
How much rice at Rs. 9 per kilogram can be
had in exchange for 18 kg. of pulses at Rs 7.50
per kg?
Ans.: 15 kg
TT​

Answer 1

Answer:

Let the required price per kg be Rs. x. Then,

C.P. of 60 kg rice = Rs.(30×17.50+30×x)=Rs.(525+30x).

S.P. of 60 kg rice = (60×18.60)=Rs.1116.

∴525+30x1116−(525+30x)×100=20

⇒525+30x591−30x=51

⇒2955−150x=525+30x

⇒x=1802430=227=13.50Rs.

So the C.P. of second lot is 13.50  RS.

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