Question

5 pens and 1 book together cost Rs.225 . Cost of 10 pens is equal to the cost of 1 book. Find the total cost of 3 pens and 2 books

Answer 1

Hi...
let pens=x,
pencils =y

So,
5x+y=225,

10x=y

5x+10x=225

15x=225

x=15

then,10×15=150

y=150,

Hence, 3pens =45/-

2books =300/-


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