1.

Anup has a total of 25 rupees 1 and 2 coins. He has eleven more 2 rupees coins than rupees one coins.How many of each coins does he have

Answer»

let no. of 1 and 2 RUPEE coins be x and y

y = x + 11

x - y = -11............(1)

and x + 2y = 25.........(2)

solving 1 and 2

x + 2y=25

x - y=-11

-----------

3y = 36

y= 12

from 2

x= 25-24=1

therefore

no. of 1 rupee coin = 1

no. of 2 rupees coin = 12



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