Swetha and Chaitanya went to a bookshop. Swetha purchased 5 pens, 3 note books and 9 pencils and used up all her money. Chaitanya purchased 6 pens, 6 note books and 18 pencils and paid 50% more than what Swetha paid. What % of Swethas money was spent on pens?

consider the amount spent by swetha be 'x'line 1: 5p+3n+9pe=x-----equ.1line 2: 6p+6n+18pe=1.5x----------equ.2line 3: multiplyin equ.1 with integer 2 and subtact equ.2 from equ.1,we getline 4: 4p=0.5xline 5: p=0.125xline 6: %is 12.5line 7: for 5 pen is 62.5%Doubt in Line No:2How 1.5x comes?Can u plz explain ....Thank u in Advance...............................

anshi

Jan 5th, 2012

chaityana spends 50% more= x + (x*50/100) = 3x/2 or 1.5 x

## Swetha and Chaitanya went to a bookshop. Swetha purchased 5 pens, 3 note books and 9 pencils and used up all her money. Chaitanya purchased 6 pens, 6 note books and 18 pencils and paid 50% more than what Swetha paid. What % of Swethas money was spent on pens?

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